MTN Retention

Someone from MTN phoned me about a month ago wanted to add 1Gig of data for R39 per month extra on my existing contract and because I always have to buy extra data per month thought it a good idea. Unfortunately what I did not know is that it is a new contract and they send me new dual sim cards that I cannot use. For the last month I have been goint to MTN but they can not cancel the contract in strore and must phone them. Trying to get retention to answer their phones is an impossible task. The previous time I phone I stayed on the line for and hour and 40 min. This morning for an hour and 20 min. I am furios. This is *****ulelnt behaviour. They make it impossible for a person to cancel a contract so that they can continue billing them. This is completely unexceptable. Please don't tel me that for the hour and ' half that I have waited for them to answer my call not one consultant were available. They are *******. I bet I am not the only one they keep on the line for hours with the intention of making it impossible for a person to cancel a contract so that they can continue billig the customer. I consider this *****.