Unhappy customer

I went to McDonald's westgate last week Wednesday swiped my card and it declined was told it will reverse,showed them that is has debited me twice.Now I'm here asking for my refund as I was told I will get it nut they are saying I need to bring a bank statement and it must be sent to head office then they will refund me but this thing takes time it's a long process ,the manager told me .They are not even sympathetic with customers I'm not the only one facing this problem ,now the manager had disappeared and told us head office is closed. Lesego went and called the store manager and he or she said we must call head office, I've never experienced such service it's the worst I'll never recommend anyone to go to there . The manager needs more training cause clearly she acanthus handle the pressure. As for the so called owner whom is at home. A statement will cost me money which Malcdonalds won't refund for. What kind of an entity is this. A whole hour waiting to get feedback mind you this is my money for God sakes