Who called from 3079200621

yes

I answered and got a recording in Spanish. Then the call ended.

I hope it wasn't the flying monkeys, again..
No message left

Called several times, no response upon answering call. Never had any voicemails.

I think your phones are being pinged.  Anytime some calls your number it leaves the location on a GSM network.  I live in CO, worked in MMJ industry and everyday I had calls from masked numbers.