Rediff.com India — hacked rediffmail account

Today i have received a mail on my rediffmail address ([protected]@rediffmail.com) from a anonymous email id named "arvin shefte"
Surprisingly, password to my email id was in the subject of this hacker's mail.

The mail sent to me is as shown below for reference:

"i'm arvin. I have the recording of your cam which shows your filthy stimulating doings & video you watched on the adult videos because that website had my backdoor hooked up.in the video clip you happen to be appearing stunning.

We have every single of your email also fb contacts because my malware provided me access to them.

I'll email your video to your contacts unless you pay me $2000 via bit coin within the next 36 hours to the below address:
B i t c o i n address: 1mc8srgzg1tqbtl3waybbbpkbfrsmc4axa
Make sure to copy and paste the address because it is case sensitive.

Once i get the money, i will destroy your video and every other information i have about you.

If i don't get the money, i will send your video to every contact of yours. Consider concerning the awkwardness you will see. Not to forget if you are in an intimate relationship, precisely how it will eventually affect?

If you want proof? Reply"yes", & i will send your recording to six of your e-mail contacts right away.

Truly - arvin"

To avoid further consequences to any of my personal accounts, as a preventive measure i have changed my password for rediffmail and my fb account.

Kindly help me in this situation as this is the first time i have faced it. Guide me with what should be the next course of action. Can i also lodge a complaint in cyber cell?

Regards,
Hyno