Thing is it doesn't even have to be something you have done.
I had what I'd consider a regular, often once a week, don't think I went more than 3 weeks without trying to bookfor about 8 months. Then 3 weeks running, no reply, so assumed she probably didn't want to see me anymore, but couldn't understand why. So although I thought it was unlikely just in case she'd had to change her number or had lost contact, I emailed her asking what availabilty she had for the next week? I got back a reply with days and times and her phone number to book.
I text asking for a booking (during when she said she was working) and was advised she wasn't available and to find someone else (not sure if she thought she was the only SP I was visiting), so now I know, so I text back that she had told me her availability by email and that I was fine if she didn't want to see me, but could she tell me why so that I could avoid whatever it was with someone else in future.
Didn't seem to understand she'd been caught in a lie, so doubled down and said nothing at all, just that she was fully booked for the next few weeks and I hadn't said or done anything to upset or offend her.
Pissed me off no end being straight up lied to like that, just have to assume she was trying not to piss me off, but I'd rather have been told that I was crap in bed, had bad breath or whatever so I could draw a line under it, the way she did it made it sound like I was welcome to book at a later date but I don't think I'll bother trying.