Which Ombudsman contained by UK deal near Bathroom and Bedroom installations? ...
Answers: Trading Standards
none, you'd need to have a word to trading standards.
Generally speaking they will not get involved contained by one to one disputes over service or quaility, they are more interested in "trends" where on earth many those complain about one unusual company.
Report your issue, it helps build thier body of familiarity. But if you are the first they will not want to get involved.