BioLife Plasma Services review: Service speed

I had An appointment at 2:30 pm arrived at 2:22 got all of my finger stick and prework out of the way was in chair waiting for a bed by 235 finally got a bed by 3 still haven’t been stuck at 3:45 I have A limited time available to donate between classes and I’ll miss my next class now. Why allow over scheduling if you can’t staff for it! All this for $20