No success in getting my ewallet pin/ reversal

I did not withdraw all money deposited via ewallet on the same day, the following day I dialed *120*277# to get a different pin, however I did not get any responses back, I tried to do this several times without success. I called their call centre to have the txns reversed since I wasn't getting a valid pin but the call centre staff were either rude (Mahlatse) claiming they couldn't hear me, I called again and Hlengiwe the manager couldn't hear me either, I called again and one Felicity told me that her system was extremely slow and made me wait for a while, then Felicity **** to me saying that their manager was not at work when I requested to speak to the manager, Felicity then made me to verify almost every single detail at the expense of my airtime, which was ultimately depleted before I could be helped. Felicity knew my cellphone number but has not even bothered to call me back and conclude my query. The reversal is still not done nor have I received a new pin to make the withdrawal, and that is after spending more than 45 minutes speaking to different people.