Discovery won’t pay from my benefits

I submitted a claim for a lactation consult and have been sent from pillar to post for the last 3 weeks. I’ve had to submit it twice plus an adjustment and each time I submit there is a new issue with the invoice. I don’t understand why the claim is being rejected as I have a benefit for lactation consulting under my plan.. I have spoken to multiple consultants via phone and chat and no one can help me. I’m so disappointed in Discovery for treating me this way knowing I’ve JUST had a baby and the challenges that come with that. This is an added unnecessary stress that I don’t need right now. Do better