We had Abbey Lock Service instal a deadlock for us in 2010. At first we thought that their service was OK, not great and then the lock failed. For a product with such a high price tag we figured we were making an investment that would last 25 years. Within a year the lock had failed, according to the rude gentleman at Abbey Locks because it had been "overturned". I mean really - how do you over turn a lock?!!? Anyhow, a replacement of internal parts was done under warranty and we were out of pocket for the call out and labour charge. Inside another year the lock broke AGAIN. When we tried to talk to the owner of Abbey Locks about how obsurd this was he supposedly referred us to the lock manufacturer, who of course never contacted us. We gave up eventually and hired another locksmith. On taking the lock apart to fix it the other locksmith advised that the internal parts were not the correct size and the repair had been kind of fudged. Supremely annoyed and glad to discourage anyone from using this company despite the decent Homestars score which suckered us in the first time around. Avoid this company at all cost!