You all lied, made the mistake, partially fixed it but now blaming us!! Im furious!!

We were promised a $800 dollar gift card if we switched over to business account. We did so and once we were installed, business associates assigned to our account made a mistake and transferring in setting up our transfer to move to our new home and in doing so he close our account and then created another one, but did not include the gift card or everything else. Now we’re being told they’re not gonna give us the money because of this. We never cancelled the work order. Our services have been active and in good standing since we initial set up in June. Our sales agent Justin made an error in setting up the transfer to our new home for the following month and he deleted the order which was the account ending in 7513. A bill was issued and account was erroneously cancelled and instead of fixing his mistake he created a new account ending in 7901 which is current account. In doing so HE didn’t correctly transfer original agreement and when we were made aware of that we brought it to Comcast attention. Not only did Comcast acknowledge the mistake that was made  They also acknowledged that I should’ve never even paid a bill on that account (7513) because the account was deleted just as quickly. To fix that Comcast transferred the amount we paid to our old xfinity account that we had closed to get this business account.  Comcast did that because they acknowledged the mistake made. And since then we’ve been fighting for this! Our services that we currently have under the account ending in 7901 is the same services for June 4 install.  Since then our services have been active, were never canceled and We havent been late or missed any payments, and have been in good standing. That mistake was not ours, It was Comcast. That’s why we have been fighting this and submitted all of the paperwork, including the work orders from the original and the proof that this was not our mistake. No one is taking the time to look at the full account history and original orders submitted . Everyone is looking at the account ending in 7901 but no one is slowing down to look at the documents that we submitted from the original work order With the support of multiple supervisors who we spoken to who acknowledge that we are due the card and a mistake was Comcast that caused this whole mess.  We are due that gift card because it was Comcast, who offered it and then Comcast who screwed us out of getting it by messing up the order. Now it feels like you’re trying to cover up by pretending we didn’t have service. Can a supervisor or someone in authority please call me so we can handle this? We’ve been dealing with this for months! This is not right how we are being treated. You literally submitted the original work orders plus you guys have it in your system where you can see what happened!! This is not right !!!