get a number back?

[clare88bear]

so the other night i met someone and promised to call them. however, the next day i got a new phone and that number hadn't been saved on my backup assistant. so now i don't have the number!! i know exactly what time i called this person when i met them so is there anyway i can get the phone records and get this number back??

[GoWest]

Do you have an online itemised phone bill you can check?