AT&T customer service rep lied about plan changes

Today I had a chat conversation with a customer service rep to ask what options I would have to change my plan when my contract expires in two months. I was hoping there would be a promotion that would lower my bill or keep it the same for the next year. The rep told me about a promotion to get cable TV, internet and home phone for $92/month. He also said if I cancelled my home phone service, that's an additional $25 off my bill - for a total of $67! I was thrilled and asked him to execute the change. Here's a snippet of our conversation where I repeated what I understood to make sure I was correct:

Me: Thanks, just to make sure I have all of this correct, this is what I understand is happening: Starting Sept. 12, I will change to a plan that gives me internet and cable for $67 for the next 3 months. After those three months, I can cancel or get a new plan.

Aron K: Yes.

Me: Great, let's do it!

Aron K: You are right.

But it's a good thing I contacted them to ask another question because I found out he LIED to me about the plan - the $92 was for cable TV ONLY. The rest of bill didn't change at all and he didn't remove Voice which he said he would do! The worst part is that I gave him a great review on the online survey, when he actually just screwed me over. I will NOT be recommending AT&T to anyone and I am highly dissatisfied with Aron K's service.