Telkom service is extremely poor!!!!!

My router was ******, I reported it the next day to Telkom Southgate requesting that they block or stop that sim card so that nobody can access my data. The lady told me there is nothing they can do. I have to buy a new router and they will give me a sim, I told her so now somebody else will be able to use my data with the ****** sim , she said yes there nothing they can do, the "technician" on duty said the same, his words were "its a loss". now Telkom has debited R1300 extra on my instalment because the ****** router sim is being **********ly used for "sms" according to Telkom. After I had tried to prevent this very matter from happening, now i must bare the costs of this . Now all of a sudden Telkom in Clearwater says we can do a sim swap. So Telkom staff don't get the same training? some store employees don't know the procedures? I id not even receive an invoice this month showing the exra debit, Telkom did not even try to contact me to find out why sms is being sent from a router sim?? I wll never do anymore business with Telkom , since the beginning of my contract i have had nothing but difficulties with your staff, they don't like to help .. i have reversed the Telkom debit, im happy to pay the normal instalment required, the R1300 was ****** of i will NOT pay. once my contract ends im abandoning this fly-by-night network