I would go back to the store and buy another yard of the bolt. I would see if they would exchange or refund on the first piece. If not I would stick it in the stash.
And yes, I have done this but did not realize till I had it in the quilt. Mine was supposed to be a white aon white and one was more creamy.
Just recently I bought some and the print was the same but the fabric on the main part was much heavier and thicker something I did not desire.
I have learned to not buy the loose piece and buy it all off the long piece.