Ok, here I explain what has happen regarding my air ticket process.
31/12/07 9pm
I book my air ticket through zuji.com.au flight MalaysianAirlines MH138/139 from ADL to KUL return. Using credit card A for payment. Total amount: AUD2604.14
01/01/08 10am
New year. Acknowledgement email from zuji.com.au regarding payment process was successful and e-ticket will be issued shortly.
02/01/08 11am
Receive a phone call from zuji.com.au mentioned the price of the air ticket has increased. I agree to authorize the extra $100 payment taken from credit card A.
02/01/08 11.30am
Receive another phone call from zuji.com.au. The transection for the extra payment was fail due the credit card A over the spending limit. The sale person told me she has credited back the AUD2604.14 into the credit card A account and need another credit card for the new total amount. Communication cut off half way through the conversation.
02/01/08 1pm
I call back to zuji.com.au regarding the payment issue for the air ticket. I gave them my credit card B number for the new payment. End up, they made a mistake, the payment went to Air New Zealand instead of MalaysiaAirlines. The sale person call the credit card B service centre to request an authorization to cancel the payment and transfer the money back to credit card B. I asked the sale person to use credit card A again to see whether it work. Finally it work. This call last for 1.5 hours!!!
03/01/08 10am
Receive an email from zuji.com.au. My air ticket has been issued electronically (e-ticket) and the flight is confirm. I checked my credit card B account, refund received. But the original payment refund using credit card A still haven't receive.
They shouldn't charge me extra. They should charge the price displayed on the screen which I already paid on 31/12. I think I have a legitimate reason to request a free upgrade pay by zuji.com.au.