Oommmmmmfg I am so angry right now lmfao I lost out on a job bc they assumed I wasn't on a spouse visa when I said I was here because my HUSBAND lives here. ughh thank you so much!
Did you actually tell them you had a spousal visa and physically show them your passport and BRP card? They would have to see it before they could hire you anyway.
It may be that:
a) they were not aware of the rules regarding family members of UK citizens who have visas and just assumed you were not eligible
b) they were aware, but they used it as an excuse to hire someone else instead
I bet most companies are not even aware that family members of UK citizens are eligible for funding - they probably just see you haven't been living in the UK for 3 years and say, 'no, sorry, you don't qualify.
In future, I would print off the Annex from the rules document and show it to them, along with your passport and BRP card, to prove that you are, in fact, eligible for funding.