[MOD]doT or saiden help please..got a new question

When my account was banned for 3 days every time i tried to login it said
Account blocked Reason:Hack then it redirected u 2 support ticket.Havent
received a reply yet

I login to the website today and its sayn.
Account blocked: Contact tech support and its listing a telephone number
Do i need to contact this number..Also is this a canadian number.?
I am in the usa.
What are the business hours for this number..Been calling but its busy