Vi India - Fake calls recieved from Vi to cancel Port out to other network

I have opted for a portout from vi to another calling service. This is the second time I am submitting my documents because when I submitted it the first time I got a call from Vodafone that my documents were mistakenly sent for postpaid instead of prepaid. So I had to message code to the company with cancel( my number) , I was cheated into sending this message. Yesterday I again opted for port out and got a call from the same number requesting the same . However the call was cut by the person when I told them that I knew what strategy they were using to get customers back to vi