My xfinity account was hacked- now no IPv4 connection

I have been working with the tier II techs since Saturday. Even had a new modem brought out. I have had multiple calls in and no one can help! The hacker keeps going in and changing ALL of my xfinity account info, and pauses all of my devices... but thats not the issue...Tech support is NOT helping me. 

I need help getting my IPv4 connection, since the majority of the WORLD is only using that, and I can not WORK without my internet working. This is now affecting my job and life. PLEASE HELP ME! @ComcastJohnN