Three agents just lied to me about a 5 year plan deal and now I'm locked into a higher rate

So when my previous contract expired in April and I signed up for a new internet contract with a $5 rate increase, the agent promised me a 5 year contract with this new rate and that an email would be sent to me once that 5 year contract was in place. That was almost two months ago. I have chatted with three other agents since who have promised me that this email would come if I waited just one more week. I still have no email with that 5 year contract guarantee and now I've been told by another agent that this 5 year plan doesn't exist and that those three agents were lying to me. So I have been essentially conned with a false promise in order to get me to accept a higher rate.