mobile

I am in trouble.. It all started when I rooted this device, installed TWRP and then flashed a custom ROM, cloudyG3.. I noticed something wrong with the sensitivity of touch.. in a few days, i figured out by drawing lines in QuickNote app, that there is a dead zone on touch screen of the shape of a straight row.. I understood then that this was the problem, not the sensitivity.. I gave a hard reset, but no use! and then...... I thought may I should try wiping...
when I accidentally wiped out everything including system in recovery mode. After that i decided to put it back to its stock firmware... I downloaded a Stock ROM by verifying its IMEI, and I didnt know it was a 16GB firmware! flashed it on 32gb lg d802, (gave a CSE flash by using LG Flash Tool) it became worse...
IMEI is NULL, though I backed up EFS in initial stages.. But the device is now unrooted.. touch gone totally crazy now... 3845 #*802# code also not working.. LG OSP not detecting my device... phone showing 10GB storage.. I then downloaded a 32GB stock and CSE flashed on it.. Now the phone is showing 32GB in 'hardware information' in 'about phone'.. But still only 10GB is usable, and touch is still bad, code still not working, and still no IMEI..
Help somebody Plzz???