he's a client, why is he drunk texting you in between bookings while dumping all that emotional load on you?  it makes sense he would compensate you for all the agravation and sucking your energy (hey ho here you are opening a thread on saafe). However... he wants to take his money back? he should have left it in your account and said something on the lines of: "Lets leave it as credit for our next bookings". Telling you to send him the money back when you guys could use it as credit money indicates he's a passive agressive control freak (and  a cheap one!). I mean.. the guy is going through marriage problems and he's using you as his emotional punching bag/pillow to cry and you have to put up with it for free? No, I'm sorry but that costs money!

How much was it? I'd keep it for the headfuck. If it's anything like my bank I can't send money out. Just say that. Not your problem. Sounds like he's taking the piss and used up your time too. If he can afford the money then he's a twat for asking for it back.