Vodafone India — sim card expiry

Address:	Mumbai City, Maharashtra, 400050
Website:	Vodafone.co.in

I got an sms from vodafone on 22 july, saying my sim will expire and i need to chane to a 4g sim by before 30 july.
Why are customers being forced to visit the store when they are already unable to handle the crowds due to aadhar?
Additionally, can vodafone deactivate a valid simcard just to push subscribers to 4g?
Further, since i am currently out of the country, please arrange to deliver my sim to me or pay for my travel back to change my sim card.