i put a new ignition in after no turn of key now no start why?

i have a 2012 vw Jetta my key wouldn't turn except enough to unlock the
steering wheel and so I replaced my ignition switch and the entire housing
and  kept the same key lock cylinder it was replaced in feb of this year due to
my car getting stollen so i had it replaced the keys and housing incase a
spare key was made, and so it all got put back together and the key now
turns but don't start all the dash lights come on but no start and also when i
reconnected the battery i opened the door and the car starts dinging like the
key is in the ignition and it is not so what do I need to do now I am so
frustrated!??