billing

I have a contract with cell c my instalments is R129,august last I joined GET IT thing they say I'll pay R39 after some months I did not see a point of having it becouse m staying in rural areas,november last year I called GET IT customer care to cancel they told me I'l pay for december and they deducted and I expected cell c deduct R129 in january they took R168 and this month they took R173.On the 20th I called them again asking why are they still deducting on my account the person I talked to said her supervisor will call me,still waiting.