Sutherland review: Return policy

On April 24 I went in and bought 8 drywall corner beads for 3.29 ea. as asked by my contractor. I got 5 to many. I took back today May 2 without my receipt but since I bought with my debit card, there was no question I had purchased them. Upon getting a refund, Sutherland KEPT 1.00 from each corner bead. Needless to say, I will NEVER purchase anything from Sutherland. I'm a 67 yr old man and I consider Sutherland thieves.