I don't often agree with Cultural Offering but they are correct about cold calls

Remember you are not owed a reply

The opposite of this is true:

You are not obligated to answer or respond.

You don't have to pick up the phone when it rings.

You don't have to open the door when someone rings the doorbell.

You don't have to respond to the text or email.

Protect your time.

Focus on what you need to focus on to reach your goals.