Man, Prat, I got no dog in this fight but you gotta understand that this isn't salvageable at this point. The photos we'd seen from that bass and the descriptions... Those aren't instruments any professional would actually send out as a finished product. Hell, that's an alpha version at best! I mean, honestly. Look at the pictures and tell me you were actually proud enough of that instrument to send it out to the dude who paid a nice sum for it, as 100% finished and ready to play.
Offering to fix stuff that shouldn't have been there in the first place isn't how it's supposed to go. And some of that stuff was utterly appaling. There are photos!
I can understand illnesses and personal emergencies. Certainly. Especially at this day and age with all that's happening worldwide. We're all human. But communication is key. If you couldn't get it done in time and felt like the result wouldn't be up to par (being a luthier, you certainly can judge that yourself. If not, well...) then there are two simple paths you could've chosen. Either refund and apologize or communicate that it's going to take longer to have a result worthy enough to put your name on it.
You chose the third option, where you sent something sub-par just to cross it off the ledger. I'm assuming, of course, I don't pretend to know your reasoning behind any of this, just judging by what's been said and shown in this thread.
I'm sorry, I don't know you nor do I have any association with the posters who've had problems with you or your builds but, judging from the "evidence" alone (even just the photos) I'd never commission you to make an instrument for me and I certainly wouldn't recommend you to anyone else.
And I think that's a key point here. A broken trust and a tarnished reputation are very hard to fix.
I wish a happy resolution to all of you.