Telkom Pay Back My Money

I lost my husband in early February and in March I tried transferring the telkom account to my name. After numerous visits to Telkom Gateway and endless calls, it was finally done in May. My premium was to have been R604 per month for a 4mg (speed) uncapped internet line and a telkom landline. At the end of May (31/05/2018) R1041.54 was taken from my account. I visited the telkom offices and they said that it was actually payment for 2 months. I was confused but accepted it. Then on 30/06 2018 an amount of R1227.49 was taken from my account. I called them and they acknowledged that I was overcharged both in May and June and was given 2 reference numbers for both billing errors: Ref: ********** 2 and Ref: ********** 2 and was told that the matter will be handed to the accounts department and should not take more than 7 working days. I heard nothing from them so I kept calling and they kept escalating the grievance but nothing was done. Every time I called I asked to speak to a manager and was always told that the manager was not available at that time. On 31/07/2018 an amount of R773.23 was taken from my account and when I called them, they again acknowledged that I was overcharged for the 3rd time. This time I insisted on speaking to a manager again and threatened to take the matter to the press if I did not get hold of a manager, so they called Lancia to help me. She said she was a manager and that she would personally check that accounts sorted out the matter, that I should give her 72 hours and she will call me back. I heard nothing from her to date. I called again and insisted that I needed my money back, that I was recently widowed and was struggling to make ends meet. Again I was told that the grievance will be escalated but they also asked me to now email their escalation center at ********** which I did on 13th August 2018 but did not receive any response from them. I am extremely upset that they have free reign to ***** my money and refuse to help me even though I have literally begged them to pay me back my money and also to stop overcharging me. Please can someone help?!!!