I'm sorry to hear this! The Abbey is my absolute FAVORITE bag!! I would say favorite bag ever, but that's always subject to change, lol! I own both the black and tobacco, and also the tobacco satchel. The tobacco does scratch VERY easily...haven't noticed that so much with my black one, though. Usually the oil in your fingers will remove the scratches when you rub, but you can take a tiny bit of Apple conditioner and remove them if your fingers don't work. I've used both methods successfully. I actually like the distressed character of the bag, but if you're bothered by the weight and scratching, then yeah, might want to consider selling it or returning it (if you bought it at a store).
As for the weight, I don't find it's as heavy as my Gigi or XL lily, but it does have some weight. I'm used to carrying heavy bags, though, so since the weight is distributed well, it doesn't bother me as much. The Gigi and Lily bother me a bit more because of the double straps but not so much because of the weight.