Best Wiring Installation in Raleigh NC

Called about a leak under my sink.  Jason was my technician and said I needed a new garbage disposal, that it was cracked and a said I needed new faucet as well and quoted me an outrageous cost to install the garbage disposal.  I decided to wait, my brother replaced the faucet and NO more issues.  I would have been out hundreds of dollars had I listened to him and had the work done.

I called Blantons to come and look at my tankless hot water heater that wasn't giving out hot water. When I called, they told me there would be a $116 service charge and then possible charge if something needed to be fixed. Of course, I understand that.
The technician comes out to my house, takes a look at water heater, breaks a lever on the box next to water heater. Connects a loose wire. Technician was there less than 40 minutes. Then he comes around with his invoice and he charges me $360 for diagnostics. Never told me prior to doing anything that it would cost this much. My total was $417, for less than 40 minutes of work. He also put in the invoice that he diagnosed the problem for 45 minutes and then took 30 more minutes to fix. Not true, I have it on my cameras and I stayed with technician the whole time.
I paid the bill because I didn't know what else to do. I immediately called the company to speak to them about this matter, was asked how much I think I should have to pay. Then was told that the manager said I shouldn't have paid and he can't give refund now that I have already paid but he would give $50 credit.. no thanks! I asked to speak to the manager and he conveniently just left to go to the field, he was supposed to call me by end of day and surprise.. he never did.
I would never recommend this company to anyone. Terrible customer service and seems like they adjust their prices based on what they think they can get away with.