Poor Service from Medshield with delays in paying GP

I am under Medshield, when my day to day is finished, I have two 2 sessions to visit a GP under their network. Now they are not paying the GP, they have been sending me from pillar to post. The query no: *** and nothing has been done. No emails on how far with the review of this case. Also, why are they reviewing because prior visiting the GP, I called them to make sure I do have this option as its in their website as per my option MediValue Compact. Their poor service is making me seem as a bad payer to this GP, as they declined to pay.