ABUSE OF MY MEDICAL BENEFITS

I wrote to Bonitas after I have received acknowledgement of claim from them, where a supplier claimed for services rendered to me on the 25th February 2016, which I had no knowledge of. I indicated in my enquiry that they should investigate this as I had no knowledge of this claim as I never consulted any medical professional on this day in question, and the response I got from them was that I need to phone the pharmacy in question (they supp**** me with the number) and tell them to reverse the claim. I am ****ed off with them because it is not my duty to do that; now I even if I phone that pharmacy, their number does not exist. For how long must I allow exploitation of my funds and benefits? I really need explanation here because if it means that this is how they handle customer/member queries, then we have a serious problem and I have no option but to cancel my membership with Bonitas. I wouldn't know about this if I did not have registered my email address with them for communication purposes from time to time. Please assist where you can!!!<br>