Contract cancellation are impossible

I visited one of your branches at Northgate and my goodness immediately when I walked in to ask about the chance process the guy by the name of Khotso said to me they can’t help me with that I need to call the call centre, the whole reason of my visit was for me to get support of which I didn’t get because that man was rather very rude and dismissive left the store after giving me a piece of paper to smoke even one of his colleague jumped in to assist me as he could see that I am not getting assisted, I had thought I was a customer regardless of what I need assistance with. After my attempts to try and call the number *** it kept saying my number is invalid, I come to a conclusion that it is vodacoms intention to make it impossible for a customer to cancel a contract with them. Other companies you go there fill paperwork and the rest is history but with vodacom you will be sent to from pillar to post. How does one get hold of you to cancel a contract because I don’t want your contract anymore, I have paid it for the contractual obligations and now I want out. Your rates keeps going up, the price and the invoice are two different things.