8ta R90 Airtime

I bought R90 of 8ta airtime over the nedbank website for my sim *** but i have send it to the wrong number which is ***.I tried to call the number but it goes straight to voicemail.I called telkom and 8ta customer care but they tell me it cant be reverse and that i should phone the person i have send it to but it goes straight to voice mail which indicated to me that that simcard is not in use.I already cant afford to buy another airtime and R90 of airtime is alot of money.