Who called from 6464324583

Got a call from them.  Their bot is fooled by my very short msg. - they think someone says 'hello' - and they waited for the follow-up.  Blocked...

Same scam different number.  They change numbers in the 646-432 exchange to prevent you from blocking their calls. Once tried to press 2 to have our number deleted. This only increased the amount of calls.
Back brace scam

I have had multiple calls for this back brace. They were returning my call which I never placed to begin with. Told me to press 2 if I no longer wanted to receive any further calls. I pressed 2 and got a human who asked what I wanted. I was somewhat pleasant and told him to stop calling. He hung up immediately

Do not answer.  Do not press any buttons.  You are just inviting more of these spam/scam calls.  Wake up!

If no one answered, there would be no reason for them to make these calls.

^^^What s/he said.^^^