I noticed they had not given me my credit as usually they do so within a couple of days.
Phoned them, and they have no record of me filing my GST return.
Yet, I have a copy of the filing receipt, which clearly shows that IRD received my online GST return on the 05 Jan.
The IRD were not interested in finding out why they lost my return, they just said to refile.
Yet, had i not received a GST credit it is likely they would impose charges and penalities.
I've had problems with the IRD online services before. Usually it is OK , but their services cannot cope during times of high workload (eg, just before important due dates).
Fortunately, I can just refile the return , but it annoyed me they didn't care that their system had lost my return. They just said it probably happened during an upgrade but did not even know if there was an upgrade on that day.