Can an individual who purchased used sofa on Facebook Marketplace bring legal action after viewing, accepting item and paying me?

Recently, I sold used furniture set. Buyer came to house to check items out. Even rented a large truck to pick them up! I was paid, and they took home. Now they are threatening legal action because they are saying that the items are not the specific brand they were described as. When I originally purchased said furniture, they were advertised as brand in question. They original furniture was purchased from a design wear house (not the specific store) almost 7 years ago! So there is no way to verify. There was ZERO attempt at deception on my end and no intentions to deceive. Buyer is now harassing me and threatening legal action. Can buyer sue me in small claims court or other recourse?