Accounting Mess!

I have been called by Greencoms Accounts Administrator, Saneliso Ncube, regarding payments that are due. Apparently, due to their payments software swap in May, I have an outstanding invoice, which was 6 months ago. To top that off, they also have been unable to find any of my other invoice payments even after using their own invoice number as reference, along with sending them proof of payments each time. The service is terrible and I would never recommend these people to anyone