Sorry to hear your tale of woe, Wayne, I think we've all been there at some time.
My weekend was " interesting".
Friday had been in the diary for many months at a Hotel where a forum member has the residency. He also wanted me for Saturday, but that had been in the diary for even longer.
Sooo, my client for Saturday cancelled the planned gig, but immediately replaced it with one in a different venue, so effectively no change. All good.
Except, it wasn't.
The Hotel are struggling with the concept of a diary, and when Matthew checked details for Friday, it transpired that Friday didn't exist for me, but was actually on Saturday.
Had we found that out early enough, it wouldn't have been terrible, because my Saturday had been cancelled yet again!!
Thus, I would have been able to cover it.
Except, I'd posted availability on Facebook, and got a walk in for a wedding a few miles from where I'd originally expected to be, so couldn't do it!
Thankfully, Matthew sourced cover by the skin of his teeth, so no tears there after all.