Damaged floors by Boardmaster delivery team.

I bought 20 melamine boards and a few tops from Boardmaster about 2 weeks ago. They delivered these the next day, which was good but, in so doing, their delivery people scratched, and badly damaged, the wooden floors of the office in which they placed the boards. Instead of gently placing the boards on the floor, they dragged these boards across the floor. I sent Management videos of the damaged floor and a voice recording of the office lady confirming how they scratched the floors, but they refused to accept that it was their delivery people. The owner of Boardmaster, to whom I spoke (a very rude and obnoxious person) refused to hear me out and put the phone down abruptly. So also is Lisa, their Sales manageress, a very rude lady, who also put the phone down in my ear when I suggested that they come over to my office, where the floors were damaged, with the delivery people to determine who is not being truthful - their delivery people or my office lady. This is a fair and reasonable way of resolving this, is it not? Also, it appears as if they sent us "B" grade boards. They deny this by saying that they don't have "B" grade boards in stock. If this was the case, then why did the floor sales person ask us if we wanted "B" or "A" grade boards? Very fishy!!! Boardmaster is apparantly, not interested in resolving these issues. Beware anyone that buys boards from BOARDMASTER!!!!!