Late invoicing causing service suspension

Since web Africa moved over to Gridhost I have had nothing but problems. I one had a debit order that bounced and a query was then opened which was resolved about a month later. After agreement I paid Gridhost all outstanding invoices displaying on the system and a additional R119 rand for the next months invoice that was to be created. I emailed to state that I completed the payment as well as the additional R119 for the invoice not yet raised (btw no feedback on that email to acknowledge receipt). By this time my account was 100% clean and had I had a credit of R119 on the account. No open invoices on the client portal

To my shock a few days later I once again started getting emails about invoices not paid and that my account was going to be suspended. I contacted Francois again to ask what is happening and why i am getting these notifications as I paid an additional amount of R119 when I paid all the outstanding invoice Just to be informed that they raised 2 invoices in January because THEY did not raise the December invoice. I told him that that is not proper accounting practices and they cannot expect me to pay. I have asked that manager call me 3 times now with NO LUCK, no one is calling and now they are threatening to suspend me again in 24 hours.

If Gridhost cannot do basic accounting and raising of invoices, why should the consumer have to be responsible for this. NO person can budget this way. I want the late invoice credited asap