My elderly mother has recently had a new bathroom installed including a walk in hydroshower, because she was unable to climb into the bath for a shower. Prior to the installion we had a brand new worcester combi boiler fitted in preparation. However now the bathroom is complete the following items are wrong and the plumber is blaming the equipment. 1. The water in the shower is very lukewarm, even though the radiators are hot. 2. The flow of water down the drains from both the shower and the sink is very slow indeed. 3. The extractor from the shower has been left loose in the loft space instead of being connected to the outside wall/roof space. Can anyone advise me on a course of action? 
