Really Important - HOW DO I EDIT what time I called?

[loren646]

I made a call at 5:58 and I need it to show that I called at 5:40. What can I do? it is the utmost importance. thank you for anyone that can help.

edit: i tried editing the time but it does not change it. What would even be better if I can show I called at both times. the first time - i just called and hanged up. But anything will work.