HELP: This ASIN has GTIN codes that do not match the brand associated to the ASIN.

This is becoming beyond a joke. I have created numerous help cases and I get the same automated response every time. I've tried their live chat, phone support (hung up every time).

We have a letter of affiliation from the manufacturer stating we are an authorized distributor, proof of acquisition, GS1 certificates and Amazon refuses to understand that we need the Manufacturer/Brand changed on hundreds of listings that have been removed because they are incorrect. We don't have the ability to change them ourselves. Without these being correct, the listings just get removed.

I've run out of options, I need some assistance..