Managing an account: Checking or savings account

I bank with PNC, 4 months ago I was locked out of my online banking. I have called multiple times only to be told the code I need can only be submitted through the mail. The first time they sent it to the wrong address. The second and 3rd time I requested the code, they said they had sent it, yet they had not. I am now 4 month into not having access to my bank account online.