I contacted Techna Glass and had an appointment 4/27/18, went in to be informed they ordered the wrong window, was told they would order correct one and was advised to purchase their groupon to help with the cost. My final charges were 183.00. The second time they came to my job and I formed me they ordered the wrong part again. They said my window had 2 sensors they ordered a 3 sensor then 4 sensor and when I had to contact them 2 days later to find out where my window was at they informed me my price would go to 793.00. I asked why and they said because of sensors in my window. I went to the location. To speak to the store manager he told me he would look into everything to get correct price, I've called several times without response and they refuse to refund my groupon. HORRIBLE PLACE THAT STEALS YOUR MONEY