I mistakenly recharged #4000 instead of #400. How do I get a reversal of the money back to my account?

I mistakenly recharged my line instead of transfering to my account how do I get my money back

I mistakenly bought data worth 450,000 from my bank account instead of 450, how do I convert it to money back?

I put the wrong operator when I was recharging a phone number and want the money reversed to either my account or sent to the Airtel number it was meant for ..the no is...