Airtel — I am not receiving any sms from any network

Address:	Mumbai City, Maharashtra
Website:	airtel.in

Hi, i am not receiving any sms from any network except airtel most of the times, further i am not getting messages from various banks, irctc, makemytrip etc. This problem started from 21th nov 2017 and i have contacted customer care atleast 20 times since then, everytime they tell me that the complaint has been logged and will be resolved by such and such date and time and i never get any response. This is really frustrating as i am unable to do online banking at the moment and this is impacting my work big time. My number is [protected], please resolve immediately. Rgds, shailesh