I dont buy things over the phone

Do you ever scream at those telemarketers when they wake up early in the morning. I do, believe you me. Just why must they call me at 9am sharp. No one to call, issit. And how in the world did they get my contact from. i think it's time i go to their company and give them a piece of my mind. If i want to buy or get senior life insurance quotes, i can always do so by myself. I dont buy things over the phone, ok. Especially when i have to provide my credit card details over the phone, period.