Hacked Email

I keep getting my email account hacked and someone changes the secondary email and password.  I have called and talked to the security department numerous times, reset passwords, been assured that it will never happen again....so on and so forth and now it is happening every couple of days.  It happened yesterday and I talked to the security department (after an hour on the phone) and was reassured once again that everything was fine and that it wont happen again.  I just tried to login a little while ago and I was hacked again with a new email added.  Does anyone know what the heck is going on.  Im tired of resetting my password every day.  It just not worth having xfinity anymore, their system is not secure.