Promo ends Oct 31: can an existing customer get the 5-year 1 Gig rate?

Hi, I've been an Xfinity Internet customer since 2022. My 12-month promo ends October 31, and the renewal price is about $100 a month for 1 Gig. I'd like to stay with Xfinity, but T-Mobile 5G Home ($50 a month with a 5-year lock) and AT&T Internet Air ($35 a month with my AT&T phone line) are both available at my address, and new Xfinity customers get 1 Gig for $70 a month with the 5-year guarantee. Could Xfinity Support help me get 1 Gig at $70 on the 5-year guarantee (or 500 Mbps at $60)? I'd appreciate hearing back by October 8. Thank you!