I gave a scammer my SSN

I know I'm a moron

My phone was blowing up from calls about a capitalone atm in Texas. I thought it was legit since I bank with capitalone and it was a "real" place calling me. They told me there was a fraudulent charge attempting to go through and I told them that wasn't me. They tried to "confirm" my info my giving me my phone number, email, and address, all of which was correct which further made me assume they where real. They where asking me to confirm my info on my card and asked for my SSN, something I normally did when I call my bank, so I gave it to them. He eventually just went "okay so your last 4 digits are-" as if he didnt need all of them. Towards the end of the call, I got a notification saying the payment went through. they said they where just testing it. I called official capital one and they said it was a scam what should I do