WTG!
Don't look a gift horse in the mouth... keep a copy of their leeter and your DV - just incase. Trusting a CA to not sell the thing (when they haven't validated) is not in me.
I have found that some CAs are too lazy to validate, others can't and others when forced to play by the rules will go along with the program.
They prey upon the unaware - and hope that the ill-informed will just pay them.