Telkom usless

My parents went to the Shopprite last week Tuesday to buy airtime for there house fone of which they were given a TWC voucher and when they tried loading it on the fone it did not work

As such I called 10210 on Tuesday to convert the voucher to the pre-paid voucher or load the fone with the amount, However, the consulted advised me to call 10213 which sent me to 0*** which sent me back to 10210,I tried again on Friday only so be sent all over again when I asked to speak to the manager the consulted would advise that they in a meeting or the systems are down and this was with every department I called. When I insisted to speak only to the manager they will cut the call on me. So once again Telkom has shown no improvement in their service of there customer whose money they take keeps it running and pays for those rude and uncouth consulates wages.

This is not the first time I had to convert the wrong voucher to the correct one with Telkom. The first time I called was in 2017 and had called 10210 and Trisha from accounts department was able to convert the TWC to airtime. Now your have this uncouth consulates and managers that do not want to help the clients of Telkom. Just want to sit on their fat ass and be paid for acting like they working

What is the department and person that can do the conversion and do not tell me to go back to the store as all airtime is non refunable, and its not like telkom did not get the money