Fake Guards

If they won't give you a license number to look up on the internet they don't have a license.

That's why they won't give you the number.

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Later, if they have one it's almost irrelevant because they didn't give it to you in the past.

So, you need a copy of the license showing dates, butthey may MIT give you that m, so you need to complain to the email address immediately if they don't give you aicense number. That's who can check dates.

Criminals sometimes lie and a guard who can put you in cuffs, beat you, fine you and take away other freedoms with police, etc. is  a criminal living about being a LEO.

Complain immediately.