Failure to reimburse for a legitimate claim

Because Discovery Health Medical Scheme failed to reflect in their records a claim I submitted to them, I re-sent it a further two times. They still have not reflected it in their records. They have neither reimbursed me nor reduced the then self-payment gap (I am now in the above threshold benefit). I paid the service provider in full and I am entitled to the reimbur*****t. Such conduct is unacceptable. They owe me the money. They must reimburse me. Let's see what happens....