How much would you pay to settle with this company?

Hello, We recently hired a contractor to do some work in our home. In the living room: remove the popcorn ceiling, putty imperfections on walls and prime and paint. In the kitchen: fix a crack on the ceiling and prime and paint ceiling. In the staircase: putty any holes, prime and paint walls and ceiling, and in hallway: complete finishes on a door frame, prep a portion of new dry wall, putty imperfections, fix a crack on the ceiling, prime and paint the hallway. We have a small home with small rooms. He promises a five day timeline with one of his professionals. On day 1, he wets and scrapes the popcorn ceiling (took a morning) and leaves as the ceiling is wet. Day 2-5 he works on mudding the living room ceiling. Always working just mornings..on day 5, he says he's done all the dirty part / prepping and just needs a day or two to finish the paint job. Asks us to throughly clean our floors. He also adds that he primed the (former popcorn) ceiling. Upon inspection, the ceiling is horrible...so we send an email with pictures to the company and they say this is all normal. That he put a type of primer to reveal the imperfections and has to mud again..the rest of the project is untouched except for poor putty work that would require quite a bit of sanding and re-puttying.. he refuses to acknowledge the poor workmanship so we're not comfortable working with them anymore or another one of the company's workers. To boot, the company says we should give the guy a break - he's only done popcorn ceilings once or twice before . The company wants payment for the materials and labour...we think the worker is a good guy, just inexperienced...what do you suggest we do? If we pay an amount, how much of the 3200$ (Total cost of project listed on estimate) would you give? We have an invoice and an email confirmation of timeline (and we agreed to a day or two more), but no contract. Haven't paid yet.