Last week I ordered a pizza using their online ordering (which is TERRIBLE in itself) and it came, and it was wrong. I kept it anyways (because it takes 1+h for delivery) but I emailed them and told them it was wrong. No one ever wrote me back.
The driver also took my $20 and didn't even offer me the $3 change. He was back in his car before I even shut the door. I was definitely going to give him a tip, but him just taking it and running really left a bad taste in my mouth.
I'm not going to order delivery again. The in store experience is good and I don't mind stopping for a slice on occasion.