Who can help with my Xfi B7 Router getting hacked daily

I have reset the password in the App and Admin Tool. I’ve strengthened the firewall settings and they continue to get changed back to low settings. This has been going on for months. I tried the chat and when it didn’t resolve my issue I asked for a Live Agent. The bot would NOT transfer me. It was unbelievable. 
I used to work from home, Medical Billing and Coding. I got fired last week because I couldn’t guarantee the integrity of my work. 
So, I’m open, and really tired of changing passwords every single day!!!