MTN - WORST SERVICE PROVIDER EVER!

I posted a complaint about 2 weeks ago. I received an email noting my complaint with advices that somebody would contact me shortly. Needless to say, I am still waiting. I have again tried to get hold of somebody at retentions, I have been in to an MTN store in Cape Gate and nobody can help me. The standard answer is retentions need to help you. Retentions is not working so how can they help me. Surely there is a way of getting assistance even if retentions aren't working. I am extremely irritated and frustrated at the lack of assistance. I am now going to cancel my contract with MTN and move to Vodacom! Thanks for nothing MTN.