Can anyone help me please? Last summer we had builders in repairing our home after the big floods. We mentioned that we would like a new bathroom and one of them (a friend of my husbands family) said he could do it. So we paid him to do it (turned out to be a big mistake!). He persuaded us to switch from our trusted over the bath mixer shower to an independant over the bath thermostatic shower. We picked one with a large umbrella head & 2 jet sprays for your back from screwfix. Initially it worked fine but he turned up about a month later saying he needed to fit a coil to the water pipe for safety. Since then the shower has run virtually cold and turning the thermostat up to max makes no difference. The only way I can have a warm shower is to turn the cold bath tap on at the same time. To make matters worse he has since emigrated to Spain! Is this easy to fix - I don't intend on doing it myself but I want to know what needs doing so we don't get ripped off again.

