Repairs not done properly

I send my Lg G3 in for repairs because it wouldn't connect to the cell network and the screen was coming out its housing. It was the second time sending the phone in for repairs. I recieved my phone back on Monday 28 July 2015 only to still have connection issues and two days later the screen is coming out its housing again. This situation is a constant frustration to have to send a phone in for repairs I don't have the time or the money to constantly run up and down to send it in.