Bad Attitude and no assistance

I put money into a Coca Cola vending machine at my work place. Firstly the pricing is wrong on the machine, it actually takes more than what it says. and secondly no variety. anyway, we called the call centre ********** 224 and the guy asked us for our machine number and the ABI number, but no ABI number is on the machine, he then asked us another 10 times for the machine number so we gave it to him, just for him to tell us he cannot help us. This is pathetic service for such a big and well known company, and further more they refuse to refund us. PLEASE FIX THE ATTITUDES OF YOUR CALL CENTRE STAFF, COCA COLA!!!