calling to offer extended services, scammers

Just got a call from them. BLOCKED!!!

I keep getting calls from this number and it is an empty/open line every time.

This number among others have been calling my number and hanging up. My husband and I have called back and requested that these companies reframe from calling me any more. They have contued  to to keep calling up until after 9pm central standard time. Here are the other numbers 979 232 2074, 985 412 2820, some calls come in as restricted, 714 551 6863,310 362 1825,757 351 3372, 201 225 4100,310 362 1825. These numbers have constantly called me over and over again. We have requested over and over that they stop calling. Most of them when they call and you answer no one is there, and the phone line disconnects.

Same here - every time this number calls, it disconnects as soon as I say anything. Oddly, I think it actually hangs up after I speak--if I just pick up and say nothing, it stays connected (to silence) for a while.