Comcast is messing my business.

My account was charged a cancellation fee of $1759.89 while I still have service and all the reps have been saying you are still processing my refund. I have asked for a phone number or email and I am told that that's an internal department. Comcast, that is my working capital! Small businesses rely on funds like those to run. Your guarantee is to give good service to businesses. How are overdrafts and late fees incurred by your incompetence helping my business? I need my refund in my account today or we are contacting our lawyer.