A very common problem for blockchain.info users
What about your spam folder? Did you check it?
Are you not using yahoo or gmail? If so, that might be the problem
I do hear from people that problem such as this solves by itself. What they did is basically to login from time to time. About their support, try your luck on their SNS e.g. twitter
Last resort would be to import your wallet into another for example in electrum. You do have your 12-word seed right?
Here's a tutorial:
Restoring your standard wallet from seedI had the same problem only on one account. Doesn't matters whatever I was trying, I was just unable to receive that shit email and login on blockchain.info
Then that problem got solved but autorization was impossible, tried a lot of browser and devices but I just couldn't login despite the fact that login/password was real and I was receiving mail too.
OP personally I lost that account (hopefully don't had money). Never/ever get any response from them.
But at the same time I want to mention that my second accound works fine...