Terrible customer service

I have being attempting to get Momentum to pay out my RA for the last 3 months since I resigned from my company. The call centre either don't answer or the person is never available and never calls me back. I have called every day for the last week, emailed the Momentum consultant, and still waiting for service. First time I called, there was an issue with SARS. Second time I called there was another issue with SARS as the consultant didn't send SARS the correct infomation. He has not been available since last week. I have also complained on the company website but not holding my breath for anyone to come back to me soon!