Dishonest *****!!!

Dishonest and unreliable! They replaced my Crank shaft sensor 3 years ago and I have been having issues ever since. I phoned them a couple months later and they assured me it was a new part from Korean auto spares. Other mechanics kept saying it needs replacing but i refused as I knew it was a new part. I took my car to a different mechanic after it broke down recently and he discovered the part was in fact never replaced and the original broken part was still inside my engine! They charged me for a job never done!