Trying to fix my LG G2 Screen

Hello, I have an LG G2 VS980 (The Verizon Model). I was sitting down and my phone slipped out of my pocket and fell maybe 6 inches and cracked. This crack stretches across the screen near the middle. My phone is responsive when i touch other areas of the screen but not on the part where it is cracked.

I recently took my phone in to a local repair shop because i had purchased the parts but wanted a professional to fix it. I purchased these parts http://www.ebay.com/itm/390820196566?ssP.... The man told me that they could not replace it because the parts to fix an LG G2 come in one piece not 2. This made no sense to me because other people said they replaced their phone fine.

I am just really confused and don't know what to do anymore. I don't know if i need to replace just the Digitizer or the LCD and Digitizer. Thank you for your time.