I have a house i rent out, i rented it to an old woman who did this, she was a an utter horror story but well spoken, i’m not even sure she had a tooth in her head, i asked her about her work once, she told me it was very disturbing and not in any way fun or glamourous, she had to regularly over hear extreme sexual abuse.
When i was very (12) young my mate was looking after a house while a family was on holiday, we spent ages on the phone to a sexline, when they got the £200 bill the daughter got the blame for calling the Bros fan line.