Bad customer service

Accepted a contract phone through telemarketing,the contract was for R129.00 p/m which has to be debited on the 30th of each month.The deal was sealed on the 17/12/2015 and the first debit order went off my account on the 25th of January amounting R1039.92 .I therefore went to the nearest Cellc store were i was told that my line was an open line,i did not understand as to why this information was not explained on my contract,i then phoned customer care line on the 27th, 2days after the incident to log a query but with no feedback.Kept on making follow up calls and getting hold of different agents some with good customer service but majority with i dont care and bad attitude shifting a blame to me for an example the most arrogant team leader i spoke to her name is Tumisho from Joburg.The sad part is they have messed up my account because they keep on debiting it without without my consent,the worst scenario was in February when my account was debited on the 25th(R1039.93) and again on the 27th(R1092.00)without confirming with the customer,i then questioned the logic behind this.Because practically this doesnt make sense.And what about the consumers right to fair and honest dealing