Apparently Trump has told his people not to pay Guiliani, and to stop taking his calls..... given his previous in not paying his bills, it's not entirely surprising.
If Giuliani couldn't predict that, he's an idiot - but he might have taken the risk on the basis that he thought the publicity was worth it. If so, it's backfired fairly spectacularly; I rather doubt that anyone, event the rabid Trump supporters, will be that keen on instructing him in future.
It'll be interesting to see what Jenna Ellis does. She has a track record for U turns: at one point she said Trump was an idiot, but became an ardent supporter when he took her on to his legal team. I suspect her enthusiasm will diminish if or when he also stops paying her.