Signed Amnesty petition a week ago. Got missed calls from this number on both my numbers.

I've also actually signed the Amnesty on the street the other day and then started having the missing calls.
now what can i do?

I am getting at least 2 calls a day from this number. When I have answered the phone - the person says you made an enquiry about Energy suppliers (which is true).
Their job is to put you through to the Energy sourcer. I read in the newspaper every call they put through, they get commission.