Vodacom ****mers

Good day ,I have been trying to cancel contracts for the past three years and it has been very difficult to because with Vodacom you can not cancel contracts in-store you have to call the call centre ,within the 3 years I would call in give them the numbers to cancel ,they will agree to cancel and while on the call they speak with you as if they are cancelling and when you drop the call you will get an SMS stating that you have upgraded to a lower data package .vodacom is a big **** !I tried calling back to reverse this and cancel the contract the next agent will give you an excuse and tell you they will process a reversal and we need to wait 30 days more to cancel and it happens all over again ,I tried calling customer service and all I get is bad attitude and no help