Highly suspicious for 2 reasons :

The tumbler/key problem has nothing to do with a SKREEM module.

In order to replace the SKREEM module, the instrument panel has to be removed. I's entirely possible that a connector to it didn't get put back correctly, or GULP ! they pulled it without disconnecting the battery first, then replugged it with the battery connected.

The initial tumbler/key issue could have been handled by you or a competent third party mechanic by referring to "Sticky Key Fix" on this forum.

DIY cost is $00.00