Absolutely shocking service was left with no heating and hot water on one of the coldest weekends of the year , sent out an engineer who wanted £850 to da a power wash as he said they the system was full of sludge, Got in touch with corgi and they said they had photographic evidence of the sludge . Sent me the photos with no date or time stamp so how do I know that this is not some others system ? Call in a independent engineer and he change the pump and said there was no evidence of sludge in the system . I am not fighting with them to get my £245 back that I had to pay the independent engineer, would not recommend corgi gas services ,