Long time user first time caller

Hi! I’ve been an Xfinity customer for over five years. I’m currently paying $124/month for Gigabit Extra (1.2 Gbps) internet.

I’ve recently found a competing fiber offer from Sonic for $49.99/month for the first year and $59.99/month afterward.

I’d prefer to stay with Xfinity, but I can’t justify paying $124/month when significantly less expensive alternatives are available.

I’d like to keep my current 1.2 Gbps speed and my own modem/router equipment. Can someone review my account for the best available loyalty, retention, or existing-customer promotions?

I’m specifically interested in any current plans with a long-term price guarantee. I’d appreciate handling this entirely through messaging rather than a phone call.

Thank you!