Unsuccessful and annoyed

A agent phoned me about my 24 month contract that is going to expire. They recommend that I upgrade to a new 24 month price lock package. Since then I am struggling with my account. I have received SMS'e saying that " We've stopped your DSTV as you've not paid. To reconnect pay R.... I have received above SMS'e on 28 Jan, 7 March, 12 March and 5 April. Every time they reconnect my DSTV they charge me Access Re connection Fee of R50 every time. I have phoned numerous times to speak to an agent and no one can help me. Every time the amount that I owe increases. They say that my debit order goes into my old price lock plan and the amount due on my new price lock plan shows I owe money. Very annoyed