Credit Not Reflected in First Bill

Last week I posted here in the forum looking for assistance regarding an issue that came up when I was creating my account and purchasing service with Xfinity for the first time that caused me to be unable to check out or access my account. I was able to get assistance through here and moved to a direct message with support where we went through a rather complicated process of trying to get my first plan purchase & activation set up several times over the course of an evening. During this process I brought up that the first time I had tried to check out the plan the night before (prior to the issue happening) it reflected that when using my own equipment I would only be charged $50 to have the technician install the service, but during checkout I was now seeing $100 for installation. I brought this up with the technician who was assisting me at the time and I was told in this chat that a $50 credit would be applied to my account, and I believe support should be able to locate that DM and confirm that this was stated. I've now received my first bill and that credit was not reflected, I was still charged the full amount. I can no longer message support anymore and when I go to my messages on this platform, that conversation is now gone.

Could I please get assistance looking into this?