Hi not sure if I'm in the right place as it might be more legal advice I need, but here goes. So just about 7 years ago we moved into our house and needed new windows, these were completed 6 years ago. The old ones were wood and although not rotten were so we wanted to replace for plastic to be more energy efficient. So we had a few of the bigger window companies round, safe style etc. My cousin owns his own carpentry business so I asked him who he recommends (afaik he was dealing with more commercial jobs, he'd done a lot of work on our local drs surgery around this time) so he said he'd sort out a price. It took ages for him to actually come and look at it but he came and gave a price around the same as we'd had from the other companies (just over £6000, average sized 3 bed semi) but assured us he would be getting a good deal from his supplier and would be a lot higher quality than the other quotes. So the work went ahead. He came round a week later to collect payment (cheque) and seal round inside a couple of windows and the patio doors were difficult to lock, so he did the sealing and looked at the doors and said he'd come back the next day with some tools .... that was the last time I saw him. In the mean time the we noticed the front door was hard to lock and also needed adjusting, it's also so badly fitted there's a massive gap along the top making our hallway freezing this time of year. I left messages he relied he'd come round never showed, then it probably got to a year later and I messaged again, he told me he'd send someone they never came, he said he'd come he never came. I gave up to be honest it got embarrassing. Last year one of the sealed units broke down and began to fill with water I couldn't face contacting him again but now we have 3 that are doing this, 2 windows have broken locks that don't latch when closed (one in my daughters bedroom) patio doors soon after fitting stopped locking so we've never been able to lock them. I sent him a message 2 weeks ago asking if there was any sort of manufactures warranty due to the units, thinking it would open a conversation about the rest or he could just say no. He ignored me. We have no paperwork. Would trading standards be able to help or am I years too late ??