IPhone :: Apple Id Is Already In Use Even Though I Never Made One Before?

So I just got an iPhone yesterday , to make an apple ID I used my email address.It told me the email is already in use , even though I never made an apple ID before but anyway it told me to change the password for it ,So I went and did that but it seemed like somebody else had been already using my email address as their apple ID because when I went into manage account , firstly the name was totally different , the address was Canada's and a phone number was there too and security questions were asked in French.Now that sort of freaked me out, has someone hacked my email address or what ? And why would they use my email address as their apple ID why couldn't they use their own ? Btw I didn't change any information on the account yet just Incase I had to report it to apple ( and I'm still not able to use it as my apple ID)