CANNOT ALLOCATE MY ACCOUNT

After several times of switching off my DSTV, I mailed the proof of payment several times with case numbers, but still they are switching off the DSTV and tell me that I owe them over R2400.00. How is this possible after mailing and phoning several times. Today they switched it off again. I phoned and they told me to give them time until 3 o'clock. I also mailed the proof to Unallocated Accounts. So did my daughter, but for 3 months they still did not allocate the payment to my account