听上去像坏经历,但问题是你已经支付他, 你可能没有证据支持你的要求, 我建议你寻求法律建议工匠应保责任险 补偿你财产中的任何损失或发信或发邮件请求他返回纠正错误, 并同时他对其他问题有话可说, 也许他会坦白道歉,

anything taken off the building remains your property it is therefore up to you to arrange disposal, most plumbers will take the stuff they take out away, but the charge to do so is usually in their price to do the job, a good tradesman will have insurance to cover damage he may have caused, if you believe he has stolen from you you can of course report it to the police, as to weather they do anything is up to them, as for the bad workmanship write to him and ask him to return and fix it, if he does not report him to trading standards ,and take him to small claims court, where did you get his contact from write to any paper or web site he advertises on and complain about his behaviour ,if he belongs to a trade organisation complain to them, but allways check references qualifications and insurance details of anyone you employ, it has cost you but it sounds like you are well rid of him.

有证据并知道公司名 带他到小理赔庭

有书面契约吗果真执行