Poor service, or spiteful

I have recently paid my account in full at Toolquip, after going through a tough financial time - the account was outstanding, but after much effort from my side I finally managed to settle the full amount. I have requested a receipt of payment numerous times, to no avail. I need the proof for financial records that need to be handed over to accountant - but after weeks I still have no response from them. I am sorely upset by this. And have been struggling to locate the Owner's contact details to at least send me the receipt of payment.