Micromax — Micromax Data card not repaired from 15 days

I HAVE GIVEN MY A76(BLUE) MOBILE PHONE TO MOBILE FIELD AUTHORISED SERVICE CENTER MANGALORE KARNATAKA ON[protected].COMPLAINT WAS MENTIONED IN JOB SHEET THEY SUGGESTED ME THAT MOTHER BOARD WILL REPLACED AS ITS ALREADY GIVEN FOR SERVICE.& AFTER 20 DAYS I CALLED THERE LAND LINE NO BODY PICK THE CALL 10TIME I CALLED 2 TIME THEY PICK AND SAYING IT WILL TAKING 10 MORE DAY & IT WILL BE SENDING FOR REPLACEMENT TO BANGALORE AND WILL BE BACK IN WEEKS TIMES.BUT ITS BEEN ALREADY 1 MONTH.AND THEY GIVING MSG IF WE GOT U R MOBILE WE SEND MSG U R CELL NUMBER. DAYS AND NO NEWS ABOUT IT I CALLED THEM TO LAND LINE 10 TIME LADY IS SAYING ITS NOT YET DONE.2 DAYS OFFICE CLOSED I WENT SERVICE CENTER AND AND THEY TOLD NEED OTHER 10 DAYS, WHICH IS NOT YET ALL GOOD SIGN, 10FEB I WENT SERVICE CENTER AGAIN AND THEY ASKING WHATS THE COMPLAINT U R CELL PHONE. I SHOW THE JOB SHEET AND THEY TOLD ME WITHIN 10 DAYS IT WILL BE READY I TOLD HIM GIVE MY CELL BACK THEY TOLD ITS ALLREADY OUT OF STATE CANT GIVE BACK