Kept calling with no message. Finally I answered it and it was a telemarketer for Spectrum/Time Warner trying to get me back as a customer. Very insistant and wouldn't take no for an answer.  The "end call" button worked though, then promptly blocked the number.

has been calling me every day for a couple weeks now. rarely misses a day. leaves no message. I do not answer calls from numbers I don't know so am unsure who is calling. usually calls between 8am-6pm, twice now have called me at almost 10 pm. read some comments on some forums saying it's a time warner/spectrum sales line (which I'm a customer of so if that's the case it only serves to aggravate me more). next time I'll answer, update this and will be reporting them.