SharpSmith, Inc - Stay Sharp!
SharpSmith, Inc offers a 7 day call back guarantee on cutting action for scissors, shears, and clipper blades.  If you call within 7 days to report a problem, SharpSmith, Inc will correct it at no cost to you. If after 7 days, regular charges will apply.
SharpSmith, Inc reserves the right to refuse to sharpen any scissors or shears that have insufficient metal to be successfully sharpened. 
Blades are only guaranteed if there are no broken teeth, and if the rails are adequate to sharpen without grinding into parts of the blade that are not normally ground during sharpening.