UC Berkeley Cal Men's Long Sleeve T-Shirt-Gray

In advance of my purchase, I inquired about the shirt's composition. Told it was 100% cotton, I ordered it. When it arrived, I checked the label, and it was either 90%/10% or 70%/30%. I was told they ran out of the 100% cotton units. However, they should have emailed to see if I would accept the alternate instead of just shipping it and hoping I wouldn't notice. Perhaps the fulfillment person didn't even know, but someone should have either contacted me in advance or put a note inside the package explaining the switcheroo.