Replace fuel pump

Sean came to replace a fuel Pump (that we provided). He gave me a quote of $330 and 3hr job. After a couple hrs. he came to me and said he couldn't get the ring off even after buying a specialty part. He then told me he had to buy a new ring. Two weeks later he came back and after I think another 3 hrs. he charged me $169. He then said you have an exhaust leak to which I said I know. Then he said "It would've been nice to know it had a full tank of gas". Does he think since he was here the first time I went and filled it? A few days later we took to get the exhaust leak when they put it up on the rack they said "did someone work on this recently?" They showed me he didn't bolt on on of the tank straps, left 2 hoses unconnected and the ring was all buggered up and had a hole gas was leaking out. So it was clear to me he put on the old ring. When I called him he said "we can cover it under warranty and said " I put it on hand tight and I have video of it." I said I was under the van and had pictures which I sent him. He set an appt for Dec 23 haven't seen or heard him since. He seems like nice guy but I would never trust him to touch my cars ever again.