The risk we run... sorry about this...
it is like having your newborn changed at the hospital, and coming home with someone's else's baby...
I have at least 3 of "not" the varieties told to be. At least I did not pay cash for them.
All you can do, is nurse it one more year, if you dont like it, use for a root stock, graft another onto it, or pass it out to others who may like it..
\From the picture, it looks good to me.