Administration errors causing line suspension

Please also assist with correcting the information on my account. I have requested that the payment date for my account to be on the last day of the month. However, from the 25th day of every month I receive sms's stating that my account is in arrears and that my line will be suspended within two days if I do not pay. I can only process the payment at the end of every month so I cannot pay by the 25th. I have requested that this date be changed in the past but obviously this has not been done. I cannot struggle with my phone line being suspended almost every month due to administration problem on MTN's behalf. <br> <br> I have emailed proof of payment as well as tried calling 808 but without any luck. it is extremely frustrating having to deal with this problem.