very disappointed

I m on the discovery key care plus, I have consulted a doctor 3 times and with my plan you have to choose 2 GP's but unfortunately I didn't choose the second one, they sent me the <br> statement for claims discovery didn't pay, I sent the statement to discovery and they sent email that they processing the claims, 2 months later I got sick and amount still outstanding. the doctor gave me the statement again. Why I was not informed until it was 3 claims outstanding and why they cant pay hence I am paying every month? I do not have money to pay and the doctor says they will put my name on collections and I will have to pay more