payment made but service suspended

MTN has suspended my service though I have made the payment. I have tried to explain to consultant that I have made the payments on the 25/09/2015 and 25/09/2015. They are saying I am owing 1047 of which I don't owe anything. I have promise to send proof of payment. Unfortunately I am not given time to do so. Today I received an sms that my line will be suspended in two day time from today. I do not how consistent MTN is with what they say because two days from today to them means the very same day. How does MTN suspend the line of someone who has made the payment after hours, and they are not available when someone call them to reinstate the line. MTN does not treat customers well, if I was not on contract I would move somewhere else. They are not fair. Even the consultant are not saying the same thing. If someone had made arrangement to pay and does not pay, MTN suspend the line immediately, if I was owing how come they did not suspend my line.