Airtel — company name update on bill

Address:	110092
Website:	airtel.in

I asked them to change company name on the bill from csc to hcl, so firstly the asked

A sample number
Mail from my office id
Company id card

After that, i received a confirmation that it will be done by 8 pm. Later i found that they have changed it to nec i never asked for and also they changed the address to old one which was there 2 years back. I asked appellate team the reason why they change it to name which i did not ask. They did not revert with reason instead they saying in order to change the name i have to visit the nearest center. I again asked the same question and again they just copy and paste the same mail. Seems to me that no one is bothered about what just happened and this is airtel for you. They don't call you and instead send you msg your number is not reachable and who's fault this is??