IMHO, This is really nothing to get worked up about. If a client needs to reach you, they know how to do it. If the person is lying, it will come out in a reference check.

Did you all miss where OP said it was a title the person never actually held?

I agree to MYOB if it's not actually affecting you, but it's still fraudulent misrepresentation, I'm surprised PPs are so blase about it. Times have changed!

definitely myob. has it ever occurred to you that the use of the title for some period of time after termination was negotiated as part of a separation package. stay away from this issue or you risk looking like an ass.