Customer is unhappy with how OSI Quad Caulk looks around their front door
 

How to best remove OSI Quad Caulk as customer wants it off and I will recomend someone else to caulk and paint their front door. Thank you

Got a picture?

Let it cure for a while, then scrape it off (it will still be pliable but not make as much of a mess). The remaining residue, streaks, etc can be cleaned with a solvent.
What did they find unacceptable about the appearance? Quad is a high grade caulk.