child custody

BEEN LIVING AND WORKING HERE FOR ALMOST TWO YEARS. I CAME LAST YEAR WITH MY HUSBAND AND MY SON UNDER A FAMILY VISIT VISA. I FOUND A JOB SO WHEN THE VISIT VISA EXPIRED I HAD TO STAY COZ MINE WAS ALREADY TRANSFERRED UNDER THE COMPANY.PROBLEMS KEEP KICKIN IN AND OUR RELATIONSHIP WENT ROCKY LIKE ANY RELATIONSHIPS WOULD. HOWEVER, IT HAD GOTTEN WORSE AND OUT OF HAND, I'VE DECIDED TO CALL IT QUITS AND PARTWAYS. SINCE I USED TO LIVE WITH HIS FAMILY OVER HERE, MY DECISION WAS TO MOVE OUT OF THE HOUSE AND LIVE ON MY OWN. I PLANNED TAKING MY VACATION A COUPLE OF MONTHS AGO TO SETTLE THINGS LEGALLY WHEN TO MY SURPRISE, I WAS TOLD THAT THEY (MY IN-LAWS) TOOK MY SON BACK HERE IN QATAR AFTER THEIR VACATION TO THE PHILIPPINES LAST AUGUST. THEY NEVER TOLD ME ANYTHIN ABOUT THIS ISSUE EVENTHOUGH THEY KNOW MY WORK PHONE AND MY MOBILE NUMBER AS WELL. AS TO WHAT IVE BEEN TOLD, FIRST; THEY NEED A WAVER TO BE SIGNED BY ME AS A CONSENT THAT THEY'D TAKE MY SON BACK HERE. SECOND, MY SON SHOULD BE IN MY CUSTODY AND NOT THEIRS SINCE I AM THE BIOLOGICAL MOM, HE SHOULD STAY WITH ME AND NOT WITH THEM. I'VE TRIED GETTIN HELP FROM THE EMBASSY BUT THEY DIDNT GAVE ANY. SO NOW IM DESPERATE SINCE ITS ALREADY BEEN TWO MONTHS THAT I HAVEN'T SEEN A GLANCE OF MY SON, SHOULD I JUST GO TO THEIR PLACE PERSONALLY AND TAKE HIM? OR SHOULD I FILE A COMPLAINT AGAINST THEM?? WILL I BE ABLE TO GET HIS CUSTODY EVEN IF HE'S UNDER THEIR VISIT VISA? PLEASE HELP..

THANKS