Not Charging - Phone is Dead

I have a Zenfone 2 551, 2GB/16GB. Bought it 45 days ago. I bought an Asus Fast Charger later on. The first time I wanted to use the new fast charger the phone turned off.

I change to a regular charger and the led turned on (I had 40% battery at the time). Left the phone charging (standard original Asus Charger) and the battery instead of charging is loosing charge. Even with the led turned on.

Eventually the battery died. I tried other chargers. 1 out 10, maybe a got the led back on, but the battery stayed on 0% and wasn't enough to even turn on the phone

I've read several people having this same issue.

http://forum.xda-developers.com/zenf...-dead-t3149072
https://www.reddit.com/r/zenfone2/co...wing_charging/
http://forums.androidcentral.com/asu...-charging.html

In one of the post someone wrote this tip

Thanks for the reply. But after a long day of stressing, it worked by itself. I read from an article about another android with quick charging that the USB could have not been all the way in in the adapter which, in my opinion, it was but regardless I repeatedly unplug and plug(15 mins -30 mins interval)... did the same with the phone plug and unplug till I saw the battery level going up

It didn't worked for me!

I've already tried:
a. Changing chargers and cables
b. Pressing power for 20 seconds
c. Pressing volume up + power
d. Plugging and unplugging the phone every 15 minutes

I bought the phone while visiting the US (I don't live there).

Has anyone else had this kind of problem, and was able to fix it?

Thanks