Airtel — No network coverage in UAE in a month

Hi my self Nithin, my mobile number is [protected], i has been using this sim about 1 and half year in UAE, and was working perfectly, now this not showing any network, and i tried using manual network selection, that also showing error. I used this number to receive SMS, every moth i recharge with 45 rs, but now past 24 days my sim is not working, plz help me to resolve the issue
my UAE contact number is +[protected]

regards

Nithin