Airtel — i am complaining ma many times but my net is not working i have 28 gb of 4g data is still left

Address:	Nalanda, Bihar, 803101
Website:	Airtel

My mobile no is [protected] my name is mayank shekhar sir i am complaining many times in airtel customer care but they are not give me solution i have 28 gb 4g deta left but since 10 days the data is not working i am in roming plz sir give me the solution he is just cheated the customer plz sir give me the solution. My email id is [protected]@gmail.com and he is cal many time and said they are provide the engineer but he is just liying