Airtel — 4g/3g not working

Address:

Bhikaji Cama Place Metro Station, New Delhi, Delhi, 110023

Since 28 may i am not able to use 4G internet despite having 140 GB data balance and active 4G service. i made a network complaint SR 90401758 with resolution date 1 June 2019. On 29th of may i visited Airtel Store and they recomende me for SIM swap but that did not work. On the same day they tried to give me new sim via sim swap but none of the order was successful. Same day i made a complaint SR 90406458 with resolution date 29 May 2019. But both the complaint were closed without any outcome. On 3 June i received a call from Airtel and they requested me to visit airtel store again and apply for a new sim card via SIM swap. I went airtel store a took a new sim card but result was same and new sim order was also failed. Same day evening i received a call from airtel again and they again registered a network related complaint with SR 90433989. On 4 June i again talked to customer care at 198 and they advised me to visit Airtel Store one more time for SIM swap. I went to airtel store, took a new sim card and waited there for an hour but all in vain. Now i am tired of talking to they care and visiting their store again and again. In between i wrote about 10 emails to them at nodelofficer.[protected]@in.airtel.com and [protected]@in.airtel.com and many calls from them just to make myself more furstated. Please provide me the solution. Thanks & Regards
Ajay Singh