The only time my 90 day report has been requested has been at the time of renewing my 90 day report. Last time I reported I did not have my passport, only a copy. No problem.
I agree with most of what people say but it also helps if you go in with a wad of cash to deposit. Keep trying. Branches outside of shopping malls are more likely to help.
The fact is that a lot of immigration officers are unaware of the rule themselves and give incorrect advice and information. I was denied the non o visa because I did not have the required funds in a Thai account which I now understand is completely wrong.