We have a patient who has both Blue Cross Blue Shield of South Dakota and Medicare. He has not coordinated his benefits and chooses not to coordinate his benefits. We have submitted the charges to both insurance and both insurance paid as primary causing the claim to be overpaid. We tried to send an inquiry to Blue Cross to refund them and they refused stating that they are Primary. We tried refunding Medicare and upon an investigation of the patients insurance, they also refused to take the refund. Now we have an over-payment of $384.92 and we are not sure what to do in this situation. The provider is afraid of getting in trouble for getting overpaid for the services because both paid as primary. How do we proceed on this account?