misinformation and cheating

I recently moved my two mobile lines to Xfinity by purchasing two Google Pixel 7. I ordered both the lines via customer service and while on call there were several lucrative offers told by agent, see below :

1. Offer of 35$ on already existing internet service. 

2. Credit of the network porting charges.

When I called and checked with customer service about the offer after these devices were received. I was told that offer is only 10$ if its gig plan for mobile and offer I was told by agent was only for unlimited plan. And we are really apologize for the misinformation provided by agent. 

My decision of purchasing two lines from Xfinity was based on the lucrative offers made by Xfinity , I will not say customer service agent as to us they are Xfinity. And today they say an apology and they will take disciplinary action against the agent.  

But how does that make difference to me in my life. I was cheated by providing the misinformation and that made me to get into a wrong provider who cheated with you to get into Xfinity and later just an apology is the criteria to satisfy the customer. I am not sure if some marketing executive's are serving as customer service who promises anything to get customers and then later real people comes in to tell the truth by saying one word called sorry. Please go through the call records to realize the pain of customer who was cheated. 

I am really disappointed with all the responses yet and now reaching out to this forum to get a positive response.