He only has mexicans doing the job and none of them speak English. The tile is cut crooked. The job is movie g super slow.
First of all, what does this have to do with movies? And second demand him to supply workers that speak English, or fire him from the job if he refuses to do so, since there is no contract I couldn't imagine you owe him anymore, even when that states on the contract how much you would owe him, since there is none.
You can sue or have someone else do your shower.
Make a complaint with him. If that don't work, you have to have someone else come in to do the work.
How is there no contract?
Might as well stop it if you don't like it and want it done properly, settle for a fair price for the work already done if possible and find someone else to finish/redo the job properly but this time make a clear contract and make it clear what you want and how you want it done, before anyone start any work both parties have to agree to certain conditions that have to be met, so that such issues don't arise and conflicts don't escalate.
That's what you get.
Your options: Fire him and hire a licensed and bonded contractor and sign a contract.
Being one of the legal and natural born Americans that has lost his livelihood to the illegal invasion, you got what you deserved.
Did you learn anything?
Thanks, but what does my shlong have to do with your f'd up tile job?