Vodacom poor service

Vodacom does not listen to clients. They phoned me numerous time about 2 of my contracts that must be upgraded. I told the agents who phoned me everytime I don't want to do it over the phone. I want to upgrade as always at Kimberley Game store. Where I can see what I get. But they just don't care enough. They just upgraded the contracts on their behalf and I as client, who pay the bills, must just accept that its upgraded. After I told them how many times that I want to do it myself.