Can't receive detailed SMSs

I am sick and tired of the poor service that I am receiving from Telkom, none of their numbers are going through, I tried reaching out to them on Facebook but I'm sent from pillar to post. I cannot receive detailed account balance when I dial *188# I was further told to download the Telkom app and it is neither working. I've been waiting for your call centre agent to call me back and to date I am still waiting. I can't even know how much data I have left.