Bad experience

Not an good after sales experience, will not support this business again! I have bought a item there that an qualified Electrician installed, however the part worked for a few seconds and then stopped working I went back to Meps and asked if they can test it because it does not work and the salesman said it was not installed correctly.... which I cannot think as the Electrician installed it and have installed many of this parts, I only wanted them to test the part and I were totally prepared to buy a new part but after this experience I will never support this business ever again.