After a purchase, I received a discount of 20% off my next purchase. My next purchase, I purchased something for 500 dollars and applied the 20% off discount. The discount showed up on the cart and checkout. However, I was charged the full amount. When I contacted them about what happened, they said they couldn't retroactively apply the 20% discount. I asked if there was a cap on the amount of purchase that the 20% off could be applied and they said no. I asked a few more times to then give me the 20% off like the cart and checkout showed it to be. They stated over and over again that they couldn't retroactively apply a discount, even if there was a mistake on their end. Later, I got an email stating that they fixed the glitche in their system and the 20% could be applied to the next purchase. I asked again for it to be applied to the purchase that I applied it to. They again said that even though it was their fault, they couldn't retroactively apply a discount. I then said that they cheated me and they got very sensitive and told me to not use "such immflamatory language". But, cheat me is what they did!! I'll never purchase anything through them again!