Insufficient and poor service from BANKMED

I am very dissatisfied with the service of bankmed. when I joined the basic plan they asked me to selected out of the network list two doctors and I picked Dr Q Koen who WAS ON THE LIST BANKMED GAVE ME! I went to the doc on the 30th of September and bankmed did not cover the bill. they informed me that medicross did not submit the right practice number. I was asked to phone and sort this out by both medicross and bankmed which is poor service. I was told today that the doctor that bankmed said I could choose is not on my plan and they won't cover the bill. I want this sorted out as it is not my fault. Bankmed needs to update their information. oh and the funny thing is that my colleagues who are also on bankmed basic go to Dr Q Koen and they have never had an issue.