That´s a tad unfriendly. A little education and some empathy go a long way. That works fine with my users.
A user of one of my applications called me to complain about some vanished records from a database that her boss required from her for a meeting. Nobody knew how the records vanished. I expressed my sympathy for her situation and educated her about some really cool skills of mine (I am a magician and mentalist). I performed a mind reading illusion over the phone. She immediately showed some sympathy for me. That caused a sudden memory improvement from "I do not recall deleting those records five minutes ago" to "I can remember events dating back to previous lives including accidently deleting those records". I produced the missing records and neither the user nor colleagues from her department tried to complain about results of their action since. They even volunteered information about their last actions preceeding unexpected program behaviour.