I filed past tax returns using an H&R Block rep, but now want to file online electronically, do I still need to set up a CRA account, or would I have one set up already?

It appears Turbo Tax was able to pull in last year's tax info, which I filed using an H&R Block rep to file for me.  I have to assume I have a CRA account set up already.  How do I access it to ensure my direct deposit info is properly set up for my new electronic filing and find out how to access it if I did not make note of my sign in information? Would I have to phone them in person?