I clean a furniture store stand alone unit on a monthly basis, i have cleaned it twice before and was paid a day or two after, I give normally give 7 days to pay but it has gone 30 since I last cleaned them, I have called them and they have said twice I would be paid asap to no avail.
What would your next step be as commercial cleaning terms are fairly new to me, im thinking maybe sending them a final demand invoice were if not paid in 3 days interest would be applied?
Of course I don't want to lose the clean so something firm but not to threatening if ya no what i mean.