Stuck with bad service

I'm a new first time customer of Vodacom and very unhappy with its service before i even took out my contract. The lack of service, being transferred from one place to another via the call centre, lack of ownership and total disregard to any quality in service. I have left 2 email queries via the website in the last 2 weeks and no one up until today has contacted me?? I tried logging into the app but was pointless with random app errors coming up when trying to log in after I managed to register. I managed to eventually take out a data contract telephonically and this was delivered to my work address with no verification as I was not there. Due to the unsatisfactory service and still no call back - I didn't open up the package and tried cancelling this but that too I was pushed from pillar to post and still unable to cancel it. Now I'm paying for something I don't want because I can't cancel it - I give up!