I receive 3 different calls at least weekly, sometimes multiple times per week to my cellular number. That number is on the national no call list. These calls come from random numbers, and when you call those numbers, a message that says I cannot connect to that number or the number is invalid. The calls are a robocall from the same businesses, "your credit card company and I need to contact them to get better interest rates", "your IT company. Just install this software so we can control of your computer and help with a problem we can see", and "you've won a luxury vacation, just stay on the line to answer a few questions". These calls come during business meetings, lunch/dinner, on the road, and every other inopportune times. I feel harassed by these scammers that are misleading and deceptive, and obviously trying to rip me off. I feel helpless since I cannot block them, get them to stop calling, etc. I HAVE to answer my phone since this line also used for by work/business and it is common to receive calls from random numbers. What am I to do???