Same thing happened to me with my original gmail address. So much spam before google was really good at filtering it. Had to change address to include my area c

Same thing happened to me with my original gmail address. So much spam before google was really good at filtering it. Had to change address to include my area code, and of course I don't live there anymore. I don't understand this though, how do they think they have an email address if they were never able to create it or sign into it? I think more likely they forgot the number at the end or something like that.