Formal Billing Dispute and Request for Account Review Regarding Unexpected Xfinity Price Increase

I need assistance from an Xfinity employee regarding a substantial increase in my internet bill.

I've been a customer since July 2009. My monthly bill has increased from $55.41 to $111.45 in six months, and I would like to discuss loyalty or retention offers to bring my rate back down.

I've previously resolved billing issues with live representatives through Xfinity chat, but today the automated assistant repeatedly refuses to connect me with anyone and only offers phone callbacks.

I am working and need written support rather than a phone call. Could an Xfinity employee please help me review my account and available promotions through private messaging?