Can't view my att bill

I've been experiencing this problem for the past 4-5 months and 2 months ago after calling AT&T numerous times about the issue, they said they knew why and it should be fixed within 2 billing cycles but it's still the same. I used to have a combined bill but canceled my Direct TV account and kept my Wireless account but now I can't view my bill. I need to view my bill so I can dispute any issues I may have!