No it isn't 'Normal' (in the sense that no normal, sane human being would do what these types if callers do) but you will get people ringing and trying to do precisely what this man has done to you. They are for the most part nothing but annoying, sad men with nothing better to do to fill their empty lives.
Just ensure that your website, AW profile, wherever you advertise has ALL the relevant information regarding your services, appearance etc. Then if somebody rings asking anything other than 'Can I make a booking please' You can politely tell them to go back to your website where they will find all the relevant informationand then to not hesitate to ring back if they would like to make an appointment. I would be willing to stake both mine and your grannies life you will never hear from them again

I have NEVER had a client who got my number and then rang up asking 1000 questions about me make an actual booking. It is one of the red flashing light signs of a timewaster. It really is better not to give them the time of day. After all there are much more important things to be getting on with

i find when a punter asks ins and outs just bored and want some one to talk to
i find when a punter wants a appointment he  calls and makes one doesnt want to know my life story

Every now and again I will get a nosey mofo who will ring and ask me inappropriate or irrelevant questions about my private life. One which I find strange is 'So, where do you  actually live?' when they have already been told where my incall venue is and that it is not my home. I tell them they don't need to know, as I will never be inviting them to my home, or if I am feeling in a silly mood, I will say 'the Moon', 'Northern Cyprus', 'Quahog' or whichever unlikely place that pops into my head.