I did not get double data but I got 60 GB extra. (Although I dont even use current 110GB quota - so 60GB extra or not does not make any difference to me)
Email from MTNL:
Dear XYZ
Your safety is our top priority. Considering Corona Virus epidemic, MTNL is making sure that you are connected to our Broadband connection at high speed so that you Work@Home and stay safe. We have added 60 GB free Topup to your MTNL Broadband Account CA_XXX. The free topup will be valid till the end of current bill cycle.
#DefeatCoronaVirus
Thank You,
Assuring you best services all the time.
With Regards,
MTNL Mumbai