Yes, creating support tickets was the first thing I did. No one answers these tickets, I provided all information I could. I then after 4 days decided to try calling.
They'll get back to you at some point, GDAX is under a large load with all of the people that are trying to use. With the price increases they have a lot of people that are coming in and using their services, spamming them up massive amounts.
I know it may sound like an excuse for them, but this company didn't go ahead and expand when they should've. But they are a reputable company in the end, so they will fix everything up with you. Just ensure calling them enough, support tickets, etc.