No feedback, sworn at by manager

Hi, I have a query which has been raised with MTN Parow Centre which is not being attended to. It has been over 5 months since I logged the query and I am not getting any feedback from the consultant, Ilyaas Alexander, he doesn't answer his phone and doesn't respond to messages. His Store Supervisor, Moenieb da Fariah, has also promised to provide me with feedback on 17 January, and nearly 2 months later, I have nothing from him. This is after he swore at me on the phone on 16 January 2018. Is this really the level of service that MTN is giving their customers?

Posting complaints on HelloPeter doesn't seem to help either because all I get is a generic response saying that the query is being escalated and then nothing happens. So I don't think that it is actually being escalated. But I want people to see this complaint so that they know what kind of service MTN delivers.