Other features, terms, or problems: Credit card

Virgin Credit Card closed my credit card account for a vague reason. Said it had unusual purchase history even though Inwas paying my card off weekly and sometimes even more frequently. Thats fine, but during the last statement period I spent roughly $24000.00 on purchases and now they are saying they will not honor those points earned. They said they do not have to even though they clearly advertise all over their websites and statements that you earn those points. It feels like a very deceptive and unfair practice.