How to get my airtime back if I bought wrong data

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

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Bought wrong Data of 600 for 6,500

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

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