I have got about 30 emails per week from apple saying i just bought somthing i have blocked over 300 but still keep coming different addresses no matter what i do even using filters...nightmare
Unfortunately your email isn't controlled by your phone... Unless you signed up with it Ata shady site or for a questionable app, your phone isn't sending them...
What email provider do you have? Go their webmail site and see what kind of spam reporting features they have. Most email providers have smart enough algorithms to direct this kind of spam in to the Spam folder.