Stop spam calls

I was called to say i won a competion last monday 22nd, i enetered last year and it was tickets to a financial adviser guy called Tom coming to the hovel tree inn next tuesday at 7pm. When she rang i thought it was genuine as i do remember entering the competion sometime ago and she said she would send the deyails to my email and havent recieved anything which sent alarm bells to me that it could be a scam. I then looked up her mobile and it came up as a scammer number. What should I do now?