Unfair suspended survice.

On 1 June my Telkom internet has been suspended due to an initial double payment that was debited as a single payment. I paid in R640 on 4 June. And another debit order of R600 was paid on 15 June. I sent Telkom proof of payment and phoned them almost 20 times. I visited Telkom centres thrice. Now they tell me my account has been cancelled. I don't inderstand. Please help!