Called twice today didn't leave a message

This company calls at least 3 times and day and never leaves message. I answered once and told them not to call. They still call everyday

They call several times per day but never leave a message.

Im so sick of getting calls from this number...ive called back and told.them not to call me.back...so irritating

"Vehicle Service Contract Division other known as Other Warranty" it said when I called to check. They are scammers trying to sell an 'auto warranty'. Not sure how to stop them, they call from several different numbers all over the country, but will try reporting to FCC.