I fed up when somebody of them asking to repair TVs, radios, phones etc.
Recently I recall a wonderfull joke which I'm using now to stop ppl bringing their home appliences to me:
The lady enters the dentists' room and asks: "I've got something wrong with my vagina. Can you have a look?"
Dentist answers: "I'm not a gynecologist, I'm dentist. But you can show your vagina to me."
Some ppl don't want to talk to me anymore
