Mtn and Mondo

Long story short. Been with mtn for some years now. We recently took out two contracts from Mondo and was **** to on what the contracts offers in order for the chap to close the sale. We immidiatly canceled the contracts and was assured that our simcards would be changed back to pre-paid. This was two weeks ago. Mondo and Mtn is just passing the ball and nobody is doing anything about this, with our numbers being de-activated, our business is taking strain. We are running our business from these numbers. We have been on the phone with MTN and Mondo every day for the last 2 weeks with no feedback or the decency to just keep us in loop as to what the problem is. I am sure we have spoken to more than 50 peole from these two companies and not one of them can resolve this issue....