You will need Caller ID for this.
Usually, it’s a telemarketing company located in India, putting your telephone number on their call loop until you actually pick up and they connect you to someone in India to sell you services on behalf of their client.
You are also probably a customer of said client.
Google their number, and you are sure to find forums filled with irate customers who have received the same annoying 1-800 number.
Call the company responsible to get to Customer Service.
If they tell you it’s for your own good, reply with: “Don’t call or write to me.
I’ll contact YOU when I want to buy something from your company.”
Works every time. I have single handedly gotten all the banks and their affiliated insurance companies in Canada off my back and cellphone.
I have also received no more telemarketing emails or inquiries since.