What are we supposed to do?

Hi,
Filed taxes end of February. All was well, never received a letter in the mail just saw action required on check your refund status so we called… we were told that in a previous year we received a stimulus check we were not supposed to so that needed to be taken care of. Ok, cool, did the OK to deduct that from our refund and should be good to go. This was April. We are on now 5 calls of talking with someone who said the “email was never sent to the dept needed to ok with withdraw from tax refund” that person claims they are sending it.. and to follow up in 30 days.. we do, and then are told AGAIN email was never sent.. yadda yadda.. they will do it. This is five times now! The last time we were able to get through to a human was in July… we waited the 30 days and are on another month of not being able to get through to someone. Everytime we call, the line says it’s too busy and ti try again. We are trying different days.. different times of day…. We are surviving.. we don’t need this refund, it just belongs to us. What’s the hang up? What are we supposed to do?