I provide a service to customers at their home, either weekly or ad hoc, and am usually paid once I have invoiced the customer which I do every 2-3 weeks. I have a regular customer who hasn't paid either of my last two invoices, one just before the summer holidays and one four weeks ago so they are for work going back a number of months. I have reminded her in person and resent the invoices via email. I don't think she means never to pay me, and is being disorganised rather than dishonest but I have got a little tired of this now and could do with the money. She has promised to sort it out but doesn't seem likely to do so quickly - I have had customers do this before but it is usually the ad hoc ones rather than the weekly ones where the amount owing can soon add up! They do usually pay up eventually.
WIBU to just stop turning up until she actually pays?