email hacked - Time Warner Internet

This question is about "email hacked", with Time Warner Cable internet and apps. Earlier this week there was no new email in my inbox. Issue persisted and I contacted TWC by phone. Very helpful tech guided me through a process to try to isolate the issue but was unsuccessful and escalated the problem to her seniors. I received a voice mail saying that the problem was that I had set the email to forward to another account and the issue would be resolved by going into settings and disabling the forward function. That worked but I have yet to hear how it is that the email was set to forward. I didn't do it and the forwarding address was to an account A google search indicates that is a Chinese ISP. Still no response as to how someone was able to get into my account and activate the forward funtion.

email hacked?