Discovery Bank

I bought electricity tokens on the app, and unfortunately added one extra digit to the meter number. My R1000 is gone, no tokens, and no help from Discovery to sort it out. Prepaid 24 needs a proof of payment in order to trace the purchase, but Discovery Bank can and/or will not help me. Been trying for two weeks. Why does the app not warn you that the meter number you enter is invalid? Like the Absa app did??? Then I would not have been in this mess.