they won't have reground the cranck if they did it on a ramp. cranck needs to come out the engine for a regrind if it's ate another set of sheels quickly it prably beacuse they didn't clean the journals up before fitting the shells or they did clean them up but didn't bother to check them for size and fitted new shells to overly work journals so it probaly needed to come out for a regrind or you can replace the cranck tho you may need to have the replacement cranck ground.
if you get stuck for a cranck drop me a PM have a load of them somewhere