CELLC TAKES MONEY AND CLAIMS YOU HAVE ACTIVATED THINGS

i have data contract with cellc, i was supposed to be playing R399 per month and suddenly my monthly payments starts going between R487 - R525 , and i went to forest hill mall store and they told me i have service content that i activated and i need to deactivate them, i told them that i never took the simcard out the router, because to my understanding you can only activate those if the simcard is in the phone. and then i told them i want to cancel my contract because i being changed what i dont know. the lady at the store told me that i need to pay for the router and the charge for the month , i asked how so because i have not used their data since the beginging of the month and she told me i used 1GB, i told her that then charge me for that 1GB, because i cannot pay R423 for the data that i did not use. i have payed the router settlement that i was told to pay, and filled in the cancellation form and send along with the proof of payment, i would like cellc to pay me the money they have been taking from my acc withiout my knowledge from feb this year.