Unable to update the primary contact email address during verification process

Quick update

I opened several support tickets. The Developer Role is still in Rejected status. From the support tickets, I just got some email templates from some supports that I need to update the primary contact email. I cannot do it on my side. But none actually helped. No real person connected to me to resolve the issue. When communicating by emails, all the replies are after several days. This issue has delayed my corporation's schedule for about 2 months.

As a partner of Microsoft, I feel really really bad, horrible experience. If there is another similar platform with better support and really care about customers, my corporation will jump to there without a doubt.