Airtel — non availability of 4g internet service

Address:

Gautam Buddh Nagar, Uttar Pradesh, 201306

I am shiladitya banerjea from greater noida. Airtel has degradated its 4g service in greater noida since oct'17. After complain, an engineer visited in dec'17 & verified poor signals in entire area. A srv req got logged ref no:82866197 dt jan'18 but till date it is yet to be restored. I hv been paying my full bill regularly with 10-20% discounts that too at their will. Airtel is repeatedly blaming it as my indoor issue but declaining to share data supporting the claim. The local airtel store is supporting my claim of poor signal in greater noida.
Now i may request your good office to direct airtel to restore 4g services in greater immediately or refund all the amounts i have paid till date. They should not charge me till they restore it.