Mislead with false information and not providing the correct information regarding a black Friday Deal.

I was mislead in the black Friday promotion. I was not aware of any terms and conditions the only terms and conditions that was explained to me was that I need to pay before the 30th of novemeber in order for me to qualify for the promotion that in Jan and Feb they won't deduct any money. When a work colleague informed me that I needed to swipe my card 3 times I consulted with the sales agent and he apologized for not informing me with the correct terms and conditions the due date was allready passed. I really feel that me a a paying customer should be liable for a mistake that was caused by the sales consultant, I didn't receive a copy of my membership contract. Please can this be rectified as this is not my error but the sales consultants error. So I shouldn't be liable for the payment for Jan end Feb 2024.