Business ProfileforSterling Locksmith

I had a jammed door lock and called to have Sterling Locksmith (I****) come look at it. When he arrived he instantly started drilling at the door before introducing himself or saying who he was with. I was busy with customers and didn’t see him right away. By the time I was able to come see what was going on, he said he was trying to fix the existing lock instead of replacing the whole thing. He told me it was going to be $150 if he could, otherwise it would be $300. Without providing a quote or consulting me before he started he just did it and told me to pay the $150. I was again busy with customers and so I paid him between them. When I went to look at the lock and check it, the whole thing was scratched up with super loose pieces and was incredibly poorly done. I immediately called him and asked what happened and why it looked the way it did and he instantly got defensive and told me because I didn’t pay the $300 to “do it right”. He completely argued with me and told me, “who cares what it looks like, does it lock easier now?” After 20 minutes of arguing with him and him basically yelling at me, he refused to fix or replace it if I wasn’t going to pay an additional $150. Later I found out that I can’t even unlock the door with my key anymore. When I called him about it, he again got extremely defensive and told me that it was because I didn’t pay the $300 to fix the mechanism. I explained that it is broken and won’t unlock now (when it did before) and he refuses to fix it without me paying the additional $150. Every interaction with him has been extremely unprofessional, he is instantly defensive, argumentative and refuses to fix something he broke, when it worked before, but was a little jammed. He started a service without consulting me first, charged $150 and broke my lock and wont fix it or give me my money back.