What should I do if my NON-O visa's validity conflicts with information from the Thai Consulate?

Hello to the group, i want to share my experience here as i see below "a trina" was asking a good question-Thai Consulate in Vancouver said i could get less than a yr covid insurance and buy the rest when i got here-my visa 0-A was good from July 29 2021-July 28 2022, but i flew out Sept 16, that is the day it was supposed to start, but the Consulate in Canada wrote on my visa page good until May 1-2022, which is 9 months from July 29 2021. i didn't pay any attention to it but went to Korat Immigration last week and they said i have to leave by May 1, instead of Sept. but they also said find out why Thai Consulate in Canada said this. They said if i get insurance, not just covid insurance, but also health insurance which includes covid insurance, then they could probably extend me another full year. Korat Immigration is very good, so hope i get it sorted out as i want to stay here the full yr until Sept 16.

by the way, anybody know of a broker here for me to get health/covid insurance asap- thanks very much in advance.