How to get my airtime back if I bought wrong data

Bought wrong Data of 600 for 6,500

• Answer this question

I mistakely bought data for a wrong number the orignial number is 0814695540

• Answer this question

Please how can i convert data to airtime I mistakenly bought 750GB for 16000 with this number 07034981237

• Answer this question

I mistakenly bought twenty thousand data and I want to convert it to airtime cause I need money