Bad service

I have a contract with Vodacom via Elite mobile. they offered me additional premiums on their network which i was not interested with and i had asked of my premium amount and then it was agreed that i will be paying R89.00 but last month the debit took about R354.00 i then cancelled all the premiums. By month end of October i then recieved that all the premiums were still taking the money and when i call them back at the call center they were giving me all the attitude and they have not helped me, the first agent didnt even bother to specify to me that the premiums had been canceled but when i called the second agent said to me rudely by saying the system is offline as if i was my problem. I am not happy with the way that Elitemobile is treating me as their client.