Who called from 2348073840

Every day and early every morning on my cell, calls come in seconds apart.  I put it on mute at night. This morning I have already missed 9 calls.
The number is 234-807-3840206 (which is a lot of numbers)

That number you are reporting is a Nigerian telephone number. Not sure of the exact location in Nigeria but it is a cell phone.

Nigerian Country code - 234
local town/cell number - 807

I know its not much but hope this helps.