How do I schedule a call back from Customer Svc rep regarding accessing my old comcast emails?

Please email me at my verification alternate email ID to communicate answer to my question above.  Your Xfinity platform here is extremely frustrating and confusing to get a simple answer or response.

I am reaching out to ask for a call from your customer service rep to assist with a very time sensitive urgent matter.  I need access to my comcast email account for important international time sensitive deadline.  Please contact me how to reach you!