Wifi router problems.

Good day I am writting this review after I've been constantly going to the Vodacom store and have not been assisted. Firstly, they are wrongly billing me every month. I selected a special for R299 and they deduct R399 from my account every month. Every time I go to the Greenacres Vodacom store, Mikayla (store assistant who assisted me with opening the contract) states that it will be fixed and that I should not worry, but it has been since November that I have been paying R399. Secondly, I made a few payments cash and ever since, they handed me over to debt collectors. I went to the store and showed them the receipts for my cash payments and was informed that it will be sorted. Lastly, they informed me that the usage has moved from uncapped to capped. I am unhappy with this and informed the cancelation department that I want to cancel this contract, because I signed for an uncapped wifi router and it is capped now. The cancelation department told me that I am in areas and I can't cancel this contract. I am very unhappy with the service that I have been receiving from Vodacom Greenacres.