These people keep calling about decisions in buying automotive parts, who the h--- cares, when will it ever stop

Some one calling to do "market research".
They've called at least 3 times in the last week.
Previous calls did not leave message.
Didn't catch the initials of the company.

This number has called me 4 times today alone and did not leave a message any of those 4 times.

keep getting calls from this number,  no message, when making a callback a connection is not possible, will try to pick up  when called next and tell them to take me off their list

This number showed up on my caller id on my cell phone, but I didn't recognize, so I didn't answer. Caller didn't leave a message. I did not try to call back. Checked here to find out it's an unwelcome solicitation so I am blocking the number.