Cannot get responses, refuse to reprocess claim

This is my second HelloPeter review on the same issue. Discovery incorrectly processed a claim with the wrong patient on two line items, leading to an incorrect payment. Twice I sent emails asking for it to be reprocessed - no reply. Then a Hellopeter review, they reply that they contacted me - no they didn't. Then I get an email from them asking me to rate the service as the issue is resolved! I respond that it is not and give all the detail again and still get no response. They clearly have my email address and I cannot understand (a) why they don't just reprocess the claim and (b) why they keep ignoring me. So this is the FOURTH time I am asking them to FIX their mistake and REPROCESS the claim...