Taillights and signal lights don't work right.

What is your question?

I took this thing twice to a shop and they never have fixed it right. When you signal left the top brake light on the cab blinks with the signal. Also the front only blinks that light under the main headlight. Also when you signal left and put on the brake it just completely stops blinking until you take your foot off the brake. Same thing happens when you put the hazards on the just stop when you put your foot on the brake. But the right signal works fine foot on or off the brake. I don't know what to with it the guys at the shop I go to apparently don't know what they're doing. So any help is worth taking.