On 10 November 2018 I flew from Auckland to Christchurch and wanted to check a bag in. I had a seat only ticket but as a Star Alliance gold card holder I always get a free bag. ALWAYS so far on ay Star Alliance flight. Not so on this Air New Zealand service. I was not too happy about it and then the supervisor showed up and told me in a very unfriendly way that on seat-only tickets the gold card rule would not apply. It did apply on many Air New Zealand flights before but this lady was just awful and told me off. I then wanted to put for the bag but Air New Zealand was not able to charge the fee to my credit card. I never had problem with this credit card, which has unlimited credit. Air New Zealand told me the problem is my credit card. After a while they managed to charge it via an eftpos machine. All of a sudden my credit card was good enough again. Finally I arrived with my bag in Christchurch with 40 minutes delay.