My running light has not been working past couple ...

My running light has not been working past couple years. Last time they checked it they said it was fixed and 1 week later it went out again. Could pound on car and it comes on and goes off. Something is loose. Asked them to check it this time. I was told the fingers holding the light were loose. I have been saying that. This time, thinking it was fixed because they said they checked it, I didnt check it until I got home. Funny. Now the bulb is burnt out. It wasnt before I went bc I checked it 1 more time b4 taking car in. Bulb was clear. Now it is dark gray. So they figured out the problem why isn't there a working bulb in it. Another thing every time I've asked them to look at the light I believe only one time it was put in print that they were checking it it has been checked at least four times.
Still not fixed.
I was told/shown on paper that everything else is okay. The last 2 times I was in I was told my battery was running low. It still is as I can see from my dash icons.
This time they say my car is perfect