The only debts I get occasionally are from new customers. You know the ones ..... pay you on first visit, agree to regular, clean next time, not home, don't send payment. I'll text them reminder before next clean and request to reply before I turn up again. A few just ignore it, they get dumped straight away. Unless its a lot to lose I don't chase it further, really can't be bothered. They've shown their true colours and its not worth my energy when I've plenty of work and good payers to concentrate on. Some may think it foolish but I used to let it wind me up, now it doesn't and I'm happier for it .... doesn't happen a lot mind, just once in a while.