System and service failure

My subscription did not go off via debit order on the 4th of April. On the 9th I received an sms to inform me that they have tried and I failed and I must pay R858,20. I paid it early on the 10th, the exact amount. On the 15th my service was disabled. I phoned and was told to send proof of payment, and the sms. (Why do I need to show proof of an sms they send to me?) I did and it was confirmed that they found the payment. Still the service was not restored. I phoned again and was told that I now had to pay an additional R236 but would get this back on a reduced debit order amount, It did not make sense to me as I paid for the full month but I paid and was told the service would me restored immediately. Unfortunately it is still not working.