Got a call from this strange number (613) 800-0935. Asking my personal idenfication info.

I just got a call from them today as well. They identified themselves as United and told me I had won a trip to Florida and wanted to confirm all this personal information they already had on file for me. At first I went along with it, cuz hey, some contests are legit, but then they asked me for credit card info cuz there was a $194 tax per person thing. I said there's no way I'm giving my credit card info over the phone; give me a number and/or a web site where I can contact you myself and check out if you're legit. They kept stalling and saying they'd give it to me after. I ended up hanging up on them. I was so paranoid that I called my Visa company and got them to cancel my card and issue a new one (cuz they seemed to have A LOT of info on me like my address, e-mail, etc and said they had my credit card info in front of them and just needed confirmation). When I called Visa and told them about it, they confirmed it was a scam.

I would like to know you exactly  this number belongs to.