$200 credit on BYOD plan in Nov 2024

Hi, I added a new line with  the Xfinity offer of $200 credit on BYOD, the plan details mentioned the offer is applicable to unlimited plan as well as by the gig, however its been more than 2 months and i dont see the offer credit on my bill. the customer care reps are now claiming it is not valid for by the gig line and they are not willing to share the plan details as well, it is disappointing to see Xfinity hiding the details and not doing a transparent business. 

I should be getting the offer credit on my by the gig plan as stated in the plan details.