very upset

My Name is Tony I am writing a grievance letter about CCI SA because I am not happy with what they did to me. on the 06/12/2017 I went to MNT Trade Route mall to upgrade the phone than they told me the system shows that I upgraded with the company namely CCI SA ON THE 15/08/2017 which I did not do upgrade with them I phone MNT customer service to help me, they gave me telephone number of CCI SA ********** 1600 I phone them I was assist by the guy Riaan who said he will call me after 24 hours, he call back after 4 hours I missed his call left a message to call him on ********** 200 I tried calling but I could not go throw , I phone the number ********** 1600 again I was assist by a lady whom I forgot her name says that it shows that I upgraded with Galaxy J5 them four months ago and I told her I did not upgrade I don't have that phone they talking about I told them to send me proof of delivery if the phone was delivered and show me where I signed for it. she than said she will come back to me after they investigate why the phone was not delivered. but she never came back to me I phone again after 24 hours spoke to Carino told the same story I asked them to clear my name on their system and pay back the money they debit on my account because I did not do any upgrade with them and I don't even have that phone that they say I upgraded with she told me they will revert with feedback in the next 24 to 48 hours and never came back. I wrote emails several time but they l give me standard answer that they will come back to me after 48 hours and they do not come back its been 4 months phoning and emailing but they doing nothing I believe this is a ***** what they did because I never spoke to them even upgrade the phone even receive the phone. can you please help me with this matter so they can clear my name and pay all the money the debit for the phone I do not have I will highly appreciate your help. Regards

T seleke