Who called from 3235456566

survey. called cell phone but we didn't pick up.
Called back "the survey you called about has ended."

Rang a few times, I picked it up and said, "hello." Waited a few seconds, then it hung up

Robo call; giggling woman saying she is having problems with her headset. I got this call on my cell and 2 minutes later on my landline. Both numbers are on the DNC list

Left  no message.

Received a telephone call on my cellphone but did not answer. I never answer unknown telephone numbers. If it is important they would leave a message.