Did I Get Hacked By Spectrum?

Bill noticed his cable bill was higher than it should be. So he tried to use the online chat feature to get support. About an hour later, he discovered that his password had been changed by the support people, and he also learned that his account was hacked by the support person. Leo says that Bill should report them right away. He did and has not received any reply. What's his next step? Leo says that what Bill will want to do is go to all his accounts that use that email and reset passwords. It's a hassle to be sure, but a must.