Repairing previous Tech visits

How does one deal with the issue of having a tech in your organization take credit for a client repair, does not fix the problem, maybe tell the customer it’s a software problem, have the repair sent to you because the call has been closed out and opened again, spend a lot of time diagnosing, fixing the problem, only to lose credability in productivity and not being on time to fix your own clients problems, yet tech one continues to get credit on the amount of repairs completed.

Just lookingfor comments that may relate to my frustration.