improper service

I bank with Capitec. Yesterday i tried to buy R100 airtime. by mistake i entered an extra 0 mistakenly purchasing R1000 vodacom airtime. I immediately called Vodacom customer care to see if it could be rectified. the lady i spoke to said they dont do this for airtime recharge. She said i should call my bank. I immediately called Capitec Tollfree. i explained everything and the lady said Capitec does not refund. I immediately called Vodacom again and asked for a supervisor, I spoke to G Grobler. He assured me that the bank can do a reversal within 24 hours as long as i dont use the airtime. he also said that it has happened before and the bank does revese the transaction. Today i went to Capitec to do the reversal and i was told that it can not be done. This is my rent money. I am a single parent with 3 kids in school. 2 big companies like Capitec and Vodacom dont do refunds!!. i find this very odd.all i want is my money reversed and i have to be put through so much drama. the manager at Capitec Bryanston said he escalated the matter and that someone would call before the day ends, but that didn't even happen. For some R1000 might be nothing but for me its alot. i really hope that i can be helped with this matter as urgently as possible