I am new to this world of bitcoin and I hope I never mess with it again! The question is:

I bought a lifetime account uploaded.to member of the Coin-Exchange.CC and then I did what he said he would pay me the account after 6 confirmations that was on the 11th of December and I do not understand this and would like to know how long takes to get those 6 confirmations? In my wallet in blockchain says it already has a 445 confirmations! And now he no longer answers my mp's!

How should I proceed? Or I lost my bitcoins?