Disappointing service

I am very disappointed with the Bonitas finance department, I have been trying to get a savings refund paid out since October. I left the medical aid end of May and I was advised that the refund will be paid in the 5th month, to date I have not received any payment. When I send email to follow up they keep on requesting the same information that I have already received. When I call the contact centre I keep on getting the same response that it has been escalated to a team leader. I am bringing this issue here because I dont know howelse to get assistance on this.