Not paying claims or providing feedback

I have contacted Discovery Health numerous times over the past few months. I have made countless phone calls and sent many emails with no feedback. I have received so many reference numbers and am constantly being told that my issues have been escalated. I have 4 claims, which have not been paid, one of which dates all the way back to June. I cannot understand how these queries have not been resolved. I am getting extremely frustrated to the point where I feel like I should just give up seeing that I am not getting any joy. I find the people at Discovery extremely *********** and am highly disappointed in the lack of service I am receiving. Can it be that difficult to look at the 4 claims, and pay them or provide feedback as to why they have not been paid??