Requesting Promotional Rate Renewal - Existing Customer

Hi! I’ve been a loyal Xfinity customer for two years, but my promotional rate just expired and my bill went up from $55 to $95.03. I’m looking at Tmobile, who is offering $50/month. I’d prefer to stay with Xfinity so I don't have to swap equipment, but I can't justify paying this higher price. What new promotional rates or loyalty discounts can we apply to get my bill back down?