MTN Retentions Department not providing feedback

To Whom It May Concern,<br> <br> I contacted MTN (via Facebook, telephone and Customer Services email) on the 18 May 2015 to cancell my contract. I was informed by MTN to cancel my contract atleast 30 days in advance, which ends on the 18 July 2015. I was told over the phone that the Retentions Department will be in contact with me, it is more than a week later, and still no feedback from them. Then over Facebook, I was given this reply (see below in inverted commas). How can this be my problem, as MTN have to have a back up. I then called the *** number today (27 May 2015) and to my surpise was charged for the call, suppose to be free, when calling from your MTN number. I put the phone down, as I could not wait any longer. Please I want this matter to be sorted asap, because I did what I was told, but MTN did not do as they promised. I want to be contacted asap, as I have questions regarding my cancellation. Regards, Valentino. My number is enclosed. <br> <br> \Hi Valentino