Why did the live help option disappear from my account?

I had the live help option available this morning but it was not during open hours. I have questions about my return because my refund amount seems off (was expected to get $1200 but recieved almost $3900) and I can't access my CRA account to view my NOA until I receive an access code in the mail. Now the live help option is not available and I have no way to contact anybody at all for help with this and I'm not sure what I should do.