I contacted Affinity on July 7th querying a rejected claim

I contacted Affinity on July 7th querying a rejected claim. The consultant told me she would resubmit the claim ad an incorrect rejection code was used and the matter would be resolved in 30 working days. Today i follow-up and I am told that the doctor needs to resubmit the claim as they had used an incorrect dependant code. 1. Why am I getting different stories? 2. Why was I not told that the doctor needed to resubmit because I would have asked them to do so? I am now sitting with a bill from 25 May 2023. And my sister cannot be seen by the doctor until this is sorted.