distorted audio from right side when using the headphone jack

Hey, i'm coming here as a last resort cause i have no other idea what to do

I bought my iPhone about 18 months ago. Because i bought it in another country i do not have warranty, and it probably would have expired by now even if i did.

3 months ago after using a couple of Bluetooth headset devices (i was searching for a replacement for a stolen device :/) my headphone jack got screwed.

I'm not certain if the Bluetooth thing is connected, it's just a hunch.

anyways, the problem is as thus:

when using the headphone jack the left speaker/ear bud/earphone/headphone sounds perfect, but the right one is HEAVILY distorted and extremely loud, even at 1%.

Since then i restored, deleted, setup a new account, upgraded version (to ios5), jailbreaked, un-jailbreaked, replaced headphone jack (twice!), set all my songs to 50% volume - and all - to no avail. the problem consists.

when using bluetooth devices to heart music / talk everything works normally. volume controlling buttons connected to the headphone jack also work.

also, it seems like only the right speaker (down by the dock connector) works now, but i'm not sure if it happened before/after the incident.

if anyone has any idea what i can do to fix this, i'd insanely appreciate it and be mad-fully thankful.

even just clues as to what might be the problem will be great.

thank you,

Yair