Unsolved written information requested

I sent an email to cell c on 13/05/2019 regarding my statements dated 01/03/2019, 01/04/2019 and 01/05/2019, requesting them to give me a written explanation on the difference of amounts that they charged versus the actual amount. Only for March account I bought 1 GB data for R149.00. I had no out of bundle data for any of these months. I follow up regurlarly but is pestered with telephone calls to verify me and I have to date received no written explanation. Just last week a lady spoke to me and told me that before last Friday she will respond in writing to my request. I do not want a breakdown because I do not understand it.

Also my contract expired for the data and my new contract was R89.00 per month. My monthly payments have since been increased and there was explained to me that they could increase my monthly amount according to the terms and conditions agreement. I also requested them to send me that specific section that states that my amount can be changed. Till now I have received nothing. That is why I want both issues to be attended to in writing and NOT on the phone.

Thank you for assisting me on my complaint with AAA repairs