Poor service

I bought a data sim card from MRP mobile 2 weeks back I requested my number to be ported as i wanted to keep using my Vodacom number When I got sim card I immediately informed them I would like to cancel this was last week Wednesday. They advised cancellation fee will be charged I agreed and I see it on my statement but reversal is not done it's more than a week when I call all they say it will be done but don't seem to be bothered at all I went to Vodacom they also telling me stories I'm tired of this i need a solution. I have been a loyal customer for over 5 years but no one can help me?where is the loyalty there? I'm using my phone for business i cannot receive calls I'm very much frustrated and dissapointed it seems you want me to use your sim card but I wont Additional number ********** 923