They called my cell number twice (once last week and once today), and did not leave any messages. I have no idea who this is.

so I sent a text message to:  626-219-7970 asking to leave me alone and I rcvd a text back saying:  Thanks for the message. Configure your number's SMS URL to change this message.  Reply STOP to unsubscribe.  Msg & Data rates may apply.

So I typed:   STOP and guess what?  I am hopefully unsubscribed because the return text: You have successfully been unsubscribed.  You will not received any more messages from this number.

so we shall see... thanks   (hope this helps others)

I just tried what "de" did and can confirm the reply texts. I've got my fingers crossed

Received call no msg left. I am listed with donotcall.gov and this appears suspiciously like a spam/ telemarketing call.

Called did not leave message, called more than once. Shows as being PASADENA, CA. I know nobody ni this area, appears suspiciously like a telemarketing call. I recommend blocking.