Dear Mrs deep pockets,
I notice from our records that we are still awaiting payment for ___ No of cleans to your windows/conservatory. This payment is well overdue, and as such if we do not receive payment in full within 14 days, we will have no option but in instigate legal proceedings for recovery in the small claims court. This will incur extra costs to yourself, and may result in a county court judgement against you.
We are disappointed that it has to come to this, and this action can be avoided by full payment.
Many thanks
Soapy and co
something along those lines mate..... If it comes to the initiating the court stuff, let me know and I will point you in the right direction..