Hi all,
I was wondering if anyone has advice on how I might go about undoing a really stubborn tap and faucet.

The bottom collar on the tap on the left won’t unscrew (I was able to get the cold water off) and the base do the faucet won’t undo either.
I’ve tried spraying them both with WD40 and letting them soak but they wouldn’t budge. I also tried gripping them with a strap wrench but it wasn’t able to get a good enough grip (the one I got from Bunnings also fell apart).
Any advice would be greatly appreciated.