ask nicely to have new keys made at their cost if they say no then demand it since you should have all your keys for a new bike at no extra cost to you. I also would say that having all the locks changed wouldn't be out of line since there would be someone else out there with keys to your bike.

I learned all I need to know about life by killing smart people and eating their brains.
Eat right ,Exercise ,Stay fit, Die Anyway!