Xfinity Live Chat offering deals not honored by Comcast

Last year I talked with a live service agent on the website who told me I would be eligible for discounted pricing if I bundled 2 gigabit internet with an xfinity mobile plan. They told me the plan would have totaled out to ~$75($45 internet + $29-$30 xfinity mobile).

Price breakdown:

(($85 billing for 2 gigabit - $40 internet discount)+($39 billing for xfinity mobile- (~$10 device subsidy)) 

I got on the phone with Xfinity billing and was transferred around between mobile and internet departments. In the end, I was told that xfinity does not offer that deal and I have to get a lower speed plan to try and offset costs. Has anyone had a similar solution and could provide some guidance on this?