Cell C *********** agents

i logged a request on the 1Sept 2015 and to dsate my query is not resolved.The query related to my billing.Why am i being debited for an additional amount of my contract which im not aware off.Cell C has taken out my fixed subcription on the 31 August 2015 and also debiited my account on the 28 August 2015 for an amount that i am not aware of.Called the call centre on numerous times and no agent can give me feedback on that amount.After logging a compliant on the 1 sept 2015 a agent by the name of Thapelo called me,He advised that the only solution they can offer is to compensate me in the form of data/airtime.After i told him that i will not accept that as the error was on there side and i want my money credited back into my account,he was very rude and abrupt to me,as a loyal customer for years to cell c i do not expect to be spoken to in that tone and he also advised me that i can esculate this matter in any form that i want ie social media etc.Upon this request from him i will be doing. As i waited for a week now and also logged numerious request with the accounts department as i have been sending them my banking statement as they requested and got no feedback from them.