Pathetic service to say the least

I have been struggling to receive feedback from Medbank since Monday it's always a different excuse my query has exceeded the SLA given and there is a mysterious back office department that doesn't take calls even going into a branch doesn't help as nobody can get hold of this untouchable department who clearly doesn't work because you don't get any feedback and to top it off they suspend my account although I sent in my FICA documents. I'm a new client and regret joining this bank.