Question that may or may not be about this show . . .

I have a vague memory of a show that has kind of the same premise as this one, but I seem to remember a slight twist. In it a guy helps people in exchange for favors he'll collect sometime in the future. If people agree to the favors that's the last they'll see of him. The twist, though, is that if they refuse, he somehow returns them to whatever situation they were in when they first asked him for help, and then that's pretty much it for them. I think the show was also from the 80's. Was it Stingray? Or if not, does anyone recall a show like that?