Hello
Like you, my passport too got stamped post March 18 and since VFS was shut my passport too was stuck.
I got the following SMS from VFS on 3rd July 2020:
Due to the ongoing COVID situation, the Visa Application Centres are closed. Collection of decision envelopes in-person at the VAC is not permitted until further notice. Your decision envelope will be returned to you via the courier service offered by the VAC. Kindly contact 022 67866057 (Monday- Friday , 8 AM till 5 PM) to arrange for delivery of your decision envelope. Please refer to the Service and Service Charge Schedule page on the VFS website
https://www.vfsglobal.ca/canada/india/Service_and_Service_Charge for further information on courier services offered by the VAC
Yes, I did notice that the link is broken here.
What happens when you call this number is that they verify your details over call, send you a link using over SMS and then you pay for the courier service using this link. Yes, it does sound fraudulent - sharing links for payment using SMS, but I did get my passport delivered via Blue Dart in 3-4 days. So you can trust this. They charge INR 450 per passport. I'd recommend, that you do this, since it looks like VFS won't allow in-person collection of passports anytime soon.
Kindly be patient when you make the call, it took me close to 45 minutes to get through. But they are very nice and guide you well.
Hope you recieve your passport as soon as possible.
Good luck and take care!