Anyone got any ideas if there's anything we can do about this. I had my central heating installed five years ago when we bought our house. The plumber who did it for us has been round a few times since to do some minor repairs when required. About 6 mths ago the boiler wasn't working. It just kept switching itself off. We called the same plumber who had a look and told us it was the motherboard. He replaced this part and charged us £260 and said it was under a five year guarantee. Like idiots we didn't get any paperwork, but tbh trusted this guy as he was always the one we used and he knew us quite well. The boiler packed up again last week so we called him back. He spent half an hour looking and said he didn't know what was wrong with it but it could be the circuit board. He said he was off on holiday so couldn't help. I said wasn't that the bit you replaced 6 months ago? He said it wasn't, he replaced something else. We have since had another plumber out who said it's definately the motherboard that needs replacing and it will cost us another £260. As we got no proof at the time how can we prove that's the bit he replaced previously. Can't believe we have to shell out this amount for the same job that was done 6 months ago supposedly under guarantee Is there anything we can do? He is corgi registered and yes, I know we were stupid for trusting a plumber