Getting a lot of calls from this number not sure if it's one of my kids or a con call can't think right now

This number is lcn who ever they are never heard of them before they called me like 5 times back to back u would think if it's so important they would leave a message

I got a call from that number when I answered they hung up after saying hello about 20 times

I keep getting calls from 802-222-0392 I haven't answered the calls because I don't know the number but I know its some telemarketer because they let it ring 4 times and then hang up because they know the voicemail picks up after the 4th ring and they don't leave a message so they hang up before the voicemail picks up. Looks like I will change it to pick up after 2 or 3 rings for now then block the number

I have received 2 calls today from this number. They never leave a message even though voicemail is setup. I'm pretty sure this same number called me several times in 2014, again never leaving a message. Think it is a telemarketer.