Sage Payroll are *********** at allocating payments

In December 2018 I struggled for weeks to get Sage Payroll to allocate payments I made for unpaid invoices. The only way to get it resolved was to complain on Hellopeter.

Now, I have the same problem again. I made payment at the beginning of February, for December and January invoices, but on my profile the invoices are still reflecting as unpaid. How is it possible for a company to be this ***********?

Sending an email to accounts @payroll sageone co za or Credit Control SHP@sage com is pointless. They never reply. I'm also not going to waste 45 min on the telephone just for the consultant to tell me I must email proof payment. Emailing proof of payment is pointless as no action is ever taken.

I have also have a negative balance for 31-60 days. How is this possible?

My site code is W28500. Please sort this out!