BioLife Plasma Services review: Denied my schedule appointment

I had an appointment 09-01-2023 for 6 pm. I arrived to the center at 6:08. The doors was locked. I was told that instead of the normal 10 minutes. i could only be 5 minutes late. I was never told this information. I have been donating there faithfully 2x a week. I informed the manager Bill that I was trying to be a participant in the drawing for $1500. He just shut me down and out.