I am not sure where your country is or what type of 'Thelemites' you are dealing with.
An A.A. thelemite could meet you, but only if you were going to be their direct 1 person contact (aside from their A.A. teacher. The O.T.O. is a fraternal organisation primarily so they should have no have no problem meeting with you.
Sorry to hear about your bad experience.
Groups / teachers can be quiet different depending on locality and who runs each group. It is hard to find the right one for some. There are some wackos out there ... and some wackos like to set themselves up as ....
And at times, it can be VERY hard to be on the other side, as a teacher or running a group ... beliiiiieeeeve me! You can get blamed for ALL sorts of stuff and trouble when someone cant 'make the grade' and starts looking for something else to blame.
I am now happily retired from all that