Self-Tapping Srew- Flat Head

Unfortunately, I have to give a bad review. I explicitly asked for self-drilling screws. I paid twice the price and an extra $31.08 to have them delivered in time to assemble my new pontoon deck for the weekend. They arrived in time which was nice, but unfortunately, they were the wrong screws. I could have bought the same screws at my local hardware store. I would suggest that the personnel that take the orders educate themselves on the difference between self-tapping and self-drilling. I was going to buy my new pontoon boat seats from this company but now I'm afraid what my show up. If they can't get the small things right, well you know......