Unauthorized deduction

Hi<br> Please assist.Vodacom deducted R271 per month from my account. I tried several times to contact vodacom with no success.I went to Greenagers mall to see an agent at the vodacom shop.She informed me that it was Comit tegnology that deducted the amount.I then questioned her why my account states vodacom.She insist that it was comit tegnology.I phoned comit tognology and Sekai from comit tech informed me that they only deduct R 99 from my account for the tablet account I have with them.Vadacom donot want to take any responsibility for the deduction made by vodacom from my account.<br> please assist