I'd like to give you a good suggestion. I call it good because I think it is really good. And usually it works. If this pair of glasses will not cause any vision problems and the lenses can be stored in the frame, you can tell your optician that you want a refund, or ask the guy to cut a pair of new lenses for you, or give you a discount. Usually the optician will accept the last request other than throw away these lenses. But sometimes, the optician will choose to cut the lenses for you because a badly cut lenses will affect the reputation of the store so that less customer will choose this store in future. The optician doesn't want to see that.