I was charged migration fee.

I am so upset with Telkom. In June I receive a call from Telkom call centre, they were offering me a R99 sim cam that has 1 GB , I took the offer, the guy that phoned me said he is going to give me a second SIM card for free so that I can give to any member of the family to phone each other for free, the guy told me that I am going to payR99 a month, I accepted the second SIM card because I was told that I will only pay R99 for both SIM cards. After a month the bill came and I noticed that the second SIM card is charging me. I phoned and ask them to cancel the second SIM card because it charging me, They did cancel the second SIM card but at my surprised the bill for end of September they charged me migration admin fee of R400 for cancelling the second SIM card, I phoned them in September 12 to ask why did they charged me R400, The lady I spoke with told me she is going to escalate the matter to Bill department, I should wait for their call within 72 working hour. I waited 7 days but no one phoned me, I called them again on the 20th September I was told that someone will call me to fix the problem, on the 26th September I called them to asked them why they are not fixing my problem, I was told that they will call me soon, my debit order date is 29 which means I am forced to pay this R400. Even today no one is calling me. Why Telkom is charging me for something that I did not ask for at the first place? This is a day light *******. I am thinking of cancelling all my contracts with them because I feel cheated on. My ID is ********** 686088 and my Telkom cell number is ********** 451. I have been misled by Telkom.