Who called from 9256488526

They showed up on my caller ID but left no message.

same as KK - caller ID, no message.  spammer, robocaller, or something like that I'd say.

Real live telemarketing person selling solar.  Started off pretending to make an announcement of PG&E rate hike...  if you are interested in solar, pick up, otherwise, block.

No caller ID info.  I didn’t answer, and the caller did not go through the prompts to bypass my call screening device.

Standard solar energy 'lead hunter' robo-call from yet another fake 'spoofed' phone number.
Standard recorded pitch about PG&E rate hikes - we have all heard it before.
Most of these scum are located in southern California and try to set home appointments that they sell to local solar installers.  They routinely violate telemarketing laws and change names and numbers if they get caught.