I used Dr. Tech to install some network wire for our corporate office. They asked for 60% payment up front. Then they continually postponed install dates and would show up 3-4 hours late without the correct equipment. Finally, out of frustration, I cancelled the project 4 weeks behind schedule. They have not issued any type of refund even though I have asked repeatedly. They emailed saying they sent partial payment but have waited 30 days and have not received anything. Do not use Dr. Tech. They will over promise, under deliver, and then refuse to return your money.