You could try starting here;
I'm also going to try escalating your ongoing issue to the Comcast corporate employees that are available to these boards. You should get a reply here in your topic.
I can certainly check this for you from here if you would like. To protect the privacy of your account, can you provide your full name, and the full account number or phone number associated with your services. To send a private message click on my name, then click private message me.