I had a major problem back a month ago. $50,000 double charge and being frozen since Janurary 1st. I waited about 3 weeks after 3 followup emails nothing.
I than started creating a ticket every week and they eventually started closing the previous and fixed the problem 7 weeks after the initial ticket.
I would suggest making a new ticket and reference the old ticket # just incase it has fallen to the bottom of the pile.
Keep trying.
P.S. Don't waste your time with their call centre. It's a complete waste of time and they can't help anyone with tickets.
I read somewhere (reddit maybe) that making new tickets just puts your account at the bottom of the pile each time to you it. Don't know if that's true (or how anyone on reddit who doesn't work for Coinbase would know that ... )
What's infuriating is that twice now they've sent me canned responses that end with: is this still an issue for you? If so, click this button to REOPEN YOUR TICKET. Which means they CLOSED MY TICKET simply because enough time had passed with nothing happening. Ridiculous.
I'm tempted to spam their twitter account and the comments of every Coindesk article about Coinbase. They deserve bad press.