New iPhone 5 screen has too much glue?

Hi, my iPhone screen stop working so this guy that fixes iPhones put a new one and apparently he used too much glue because the screen looks awful, it has dark spots, light spots, and it looks like it has water inside the corners, he didn't charge me anything of course, but is this going to break my phone?

Is this guy even a professional? You don't need glue to fix a screen- it should just pop back in without the use of glue. But yes, it could damage the phone. The screen may look worse and worse as time progresses, and the glue could get into other components of your phone which may destroy them. It probably will break your phone.

Thanks. And this is the 3 rd time he fixes my phone, and the other 2 was perfect, he has a cell phone store actually! I'm so mad!