Question for IGI INDUSTRIAL AND INSURANCE PLC

HOW LONG DOES IT TAKE TO GET RESPONSE TO LETTERS WRITTEN TO THE COMPANY ON CLIAMS? I WROTE TO THE COMPANY 4 WEEKS AGO ON CLAIMS ON MY COMPLETED PLAN AN UP TILL THIS MOMENT THERE IS NOT EVEN AN ACKNOWLEDGEMENT TO CONFIRM THAT IT HAS BEEN RECEIVED AND RECIEVING ATTENTION OR NOT????????