Poor Cancellation Policy... watch out

I went to MTN for their Black Friday special which is the same if not more than Cell C has to offer me for R499. I require my number to be ported. I am on a month to month with Cell C. I duly phoned customer care only to be told they cannot cancel the line and they must put me through to sales to see if they can counter offer, I got put through to someone... not sales who told me they cannot help me and I should of cancelled my contract Monday to Friday 8 to 5.... sorry... how can you tell me that I need to phone a specific number to cancel... I only have to serve you with a months notice which I was duly willing to do... like Cell C got my business from Vodacom... I paid out Vodacom their notice and had my number ported to Cell C that month. According to Cell C and after going to the store in Pavillion, this will not happen on Cell C. This means I loose my special at MTN and Cell C hasn’t even been willing to counter offer even though I can show them on their site a counter offer package they can give, not that I am interested now. I would just rather cancel the contract, get my family to do the same and move all over to MTN, we all on Month to Month. I know that my number can be released for port out and a ghost number given to the end of my month I owe Cell C. But it’s a cunning way of trying to keep me on your network, which I might of done. Your poor service from your call centre, the fact that your cancellations are not even done via email 24 hours a day and I am battling to find the clause in the contract that says I can only cancel with a cell c Monday to Friday 8 till 5, any other time is not seen as a month. Telkom is just as bad and now I see why a potential buyout might make a fantastic merger. It’s also scary that I see a review on this forum was responded to on Saturday 30th November just before 14:00... but you can’t help me with a cancellation and porting my number........