I think he might be the same guy as this one:
http://www.saafe.info/main/index.php?topic=38547

Definitely sounds like it

Hi he?s obviously doing the rounds .. had this idiot yesterday sent two stupid miss call messages I tried to call back as wanted a bit of fun with this idiot but phone is dead .. Bristol area .. last number used was 079818512**
Obviously using ?1 throw away SIM cards xxx

Which area of the UK does the guy cover ?

There's a few threads about this guy.  Tries to book two hours.  Then pretends he's supposed to be texting another girl about the "fake" booking.  Does fake "missed call" texts to try and get you to call him back.  Has the fake voicemail from all these various companies he supposedly works at, seems to be Debenhams is the favourite.  And yes he does it to people all over the country. Whoever is buying his rubbish that day.  When he rang me he sounded Irish, but there are reports of him having all sorts of different accents so tries a lot of tactics.  If he gets through your screening and manages to book he then wants a dirty text conversation and if you don't respond becomes abusive.  Not sure if the threads would be better merged or whether to leave them as they are?  Wondering if he should be reported to Ugly Mugs as well as it seems he really has a screw loose? 

Ok.. so I had a booking with this  particular charmer for which I was running about 15 min late (My mistake, yes). But when I texted him an apologetic message explaining I was running late and why I was running late he replied with some vile abuse:

I have no idea what sort of disorgonised shamples your running and I don't give a fuck about your haircut appointment, it's not my problem, your the most stupid disorganised slag ive ever had the misfortune to try and book, you DO NOT know your fucking arse from your fucking elbow, you are just a messer with no manners and i know your type, its disorganised cunts that give the good prostitutes a bad name, lesson for you to learn in the future when someone like ME gives someone someone like YOU an instruction fucking do it you slag as us punters pay your fucking wages.

That was the gist of it, followed by more abuse. I heard that this particular guy has been doing the rounds across the country and may  or may not be a timewaster, but I would just be careful with taking a booking from someone so quick to anger... I can understand an annoyance from a 15 min delay... but the reaction felt a bit over the top.

Number: 079430930**

PM for the rest of the number if anyone wants it

Had 2 days worth of drama with this one. EXTREME abuse and threats. Hundreds of messages very similar to the first ones posted of just EXTREME abuse because i wouldnt sex text with him 10mins before the end of the booking. What he didnt realise was that every time he text and autoresponse from his work also pinged. When i told him this hes confesses to doing it for freebee chat then proceeds to dozens more messages of extreme abuse

There's a few threads about this guy.  Tries to book two hours.  Then pretends he's supposed to be texting another girl about the "fake" booking.  Does fake "missed call" texts to try and get you to call him back.  Has the fake voicemail from all these various companies he supposedly works at, seems to be Debenhams is the favourite.  And yes he does it to people all over the country. Whoever is buying his rubbish that day.  When he rang me he sounded Irish, but there are reports of him having all sorts of different accents so tries a lot of tactics.  If he gets through your screening and manages to book he then wants a dirty text conversation and if you don't respond becomes abusive.  Not sure if the threads would be better merged or whether to leave them as they are?  Wondering if he should be reported to Ugly Mugs as well as it seems he really has a screw loose?

I had this gut last year. he booked me and my friend for a 2 hour duo booking, wanted us to dress up and we were getting ready when he started with the sex texts, then i got the fake booking to waste my time saying another working girl had a video of him and was blackmailing him. He also said he was using his wife 'claires' phone as his was broke and when i rang it I even got a autotext back saying 'claire' was busy. He tried to convince me to blackmail him for money, that's when I finally saw through it. This guy certainly goes to some lengths. He even had me convinced for a while that another SP was trying to ruin my business. Hes fecking bat sh!t crazy!!!