No feedback on billing queries

I see that MTN claim that They contacted me, this is not true, I had to call on the 21/04/2015 and follow up. I was then advised by Sibusiso Zulu that he will provide me with feedback before my debit order goes through on the 25th, it is now the 5th May and still no feedback about the past two incorrect debits that went through my account and no feedback on my refunds. I have tried calling 808 and do not yet through. I have been an MTN client since 2005 and this has been the worst experience, they clearly do not care about their clients. Any other institute would have at least made telephonic contact. I am disgusted.