Disability lawyers

Hello everyone, I have a few questions for my Canadian friends in GTA. Have you or anyone you know ever worked with CANADA BENEFIT GROUP???? Does it worth getting a lawyer for tax return benefits if you have worked on & off due to your health condition? They are asking for access to my CRA account. Is it safe to do that? I've been a scam target once and I'm afraid of sharing information with people specially because everything is done online and over the phone, I have hard time trusting. Does any one know a good lawyer? Thank you in advance for your help. Keloudia