WRONG PAINT USED ON MY HOUSE!

I just had my house painted only to discover, after the fact, that the painting company used the wrong paint. We specified Benjamin Moore Aura and the painters used Benjamin Moore Ultraspec Ext. The Ultraspec is the lowest grade paint Benjamin Moore sells and Aura is their top of the line. Can the house be repainted with Aura and if we do that, will the Aura paint adopt the durability of the underlying Ultraspec paint?... or will the base Ultraspec Ext simply serve as a primer for the second coat of Aura? Please advise...
A frustrated homeowner.