If I had money I'd cancel my contracts with immediate effect

TELKOM mobile decided to stop debiting me. Then when I call about it all the agents say the debit order went through even though nothing reflects on my bank statement, went as far as sending said statement to show them but nobody has done anything. Earlier this month when another debit order didn't happen I went online to make a payment. Their online system reflected a certain amount, I paid this. I then switched banks for personal reasons and had my new bank send them a request to switch their debit order to them.. Telkom then went ahead and tried to debit me on the 15th when my debit is the last day of the month and they had stopped debiting me. I then call because now my line is suspended only to have Asanda Dayimane tell me there's nothing she can do. I am really FED UP WITH TELKOM. HELP!!!!!