I NEED HELP PLS!!

HELLO QL MEMBERS;
3 MONTH FROM NOW,I GOT A VISA TO MY FRIEND THAT WHO'S WORKING FROM AGENCY HERE IN QATAR.FIRST,SHE TOLD ME THAT SHE KNOW'S SOME1 THAT WHO CAN GIVE ME A VISA.AND I HAVE TO PAY THAT.FROM THE FIRST TIME, SHE TOLD ME THAT I HAVE TO PAY THAT VISA FOR 5,000 TO 6,000 RIYALS..THAN I AGREE BECAUSE SHE TOLD ME THAT IS ALL AND ALL,JUST I GIVE THE MONEY AND SHE WILL BE THE ONE WILL DO MY VISA PROCESSING.
FIRST TIME I GIVE HER 5,000 RIYAL.WHEN MY VISA FINISH,SHE TOLD ME THAT I HAVE TO PAY 9,000 RIYALS ALL AND ALL.
SHE GIVE ME THE IMMIGRATION RESSIT.THAT IS 2,100 RIYALS FOR VISA PROCESSING IN IMMIGRATION..I ALREADY GIVE HER 5,000 RIYALS
NOW,,SHE IS ALWAY'S ASKING ME TO PAY THE REST.WHICH IS 4,000 RIYALS..BECAUSE SHE TOLD ME THAT MY SPONSOR IS ASKING THE MONEY TO HER..I TOLD HER THAT BEFORE I WILL PAY THE REST,I NEED TO SPEAK TO MY SPONSOR..OR GIVE ME HIS NUMBER SO THAT I CAN CALL HIM.MY PROBLEM IS SHE DONT LIKE TO GIVE MY SPONSOR NUMBER.BEFORE THERE IS 3 NUMBER OF MAN THAT THEY ARE ALW!Z CALLING ME,,THEY TOLD ME THAT THEY WILL CANCELLED MY VISA IF I DIDNT PAY THAT MONEY.I WAS FEAD-UP THAT TIME,BECAUSE THEY ARE NOT STOP CALLING ME.I TOLD THEM THAT IF THEY WNT TO CANCELLED ITS OK.I CNNT DO ANYTHING.I KNW THAT THOSE CALLER IS FAKE.I TOLD THEM THAT IF THEY WILL NOT STOP CALLING ME,I WILL COMPLAINS TO THE POLICE AGAINS THEME:AFTER THAT THEY STOP CALLING ME.WHAT IS THE RIGHT THING THAT I HAVE TO DO?HELP ME PLEASE....THANKS