Frustrated with Discovery Group Life.

I am once again so frustrated with Discovery. Discovery Requested a Progress report from my treating Orthopedic Surgeon. It was advised by a letter from Discovery that they will cover the cost of the report. I spoke to my Orthopedic Surgeon who advised that payment needs to be made before commencement of the report. I advised my broker, that i would borrow the money and pay for the report. He emailed Discovery to confirm if that would be fine and advised them of the amount that needed to be paid for the report. Discovery rep**** and said that I can make payment. Once payment is made I must send proof of payment and my banking details. They advised it will take around 5-6 working days to reimburse me the money. Till this day I have not been given any feedback and Discovery has not reimbursed me the money. My broker is in constant contact with Discovery and I am still waiting. I have attached proof of payment,banking details and the letter stating that Discovery will pay for this report. Payment was made before 8th of January 2019, it is now 11th February 2019 and no feedback or reimbur*****t Please assist Urgently.