Please help my iPhone! non responsive

Hey my iPhone screen got severely cracked so I figured it be cheaper to order a LCD digitiser and replace it myself what I didn't know is it didnt come with a home button or the third flex cord that is for the front camera ! Anyway my iPhone powers on but it's not responsive to my touch and the scree had vertical lines coming down it. Is it a faulty screen I bought ? And I can't tpransport the old front camera because the new screen is a bit different so I can fit it . Please help I ca t send it back because it will cost me twice the amount and how much would it be to get it repaired professionally?PLEASE HELP !