They don’t follow Federal Trade Commission (FTC) for declared weights!

They claim they have a quality guarantee but they do not! I placed an order for buffing compounds and they 2 of the 4 compounds were 20% and more lower in weight than stated. After bringing this to their attention they refunded what they shorted me then stopped accepting my orders. All I asked for was the material they charged me for but did not deliver. Check everything carefully!
Declared weight by Benchmark was 16 ounces (1 pound).