WiFi Renewal Email Question

I received an email a couple of days ago stating that my WiFi plan price was changing and my bill would go up for it unless I renewed for the next 5 years. Is this a legitimate email? Because I seem to recall when I signed up last year that my rate was already locked in for 5 years unless I misheard the sales rep somehow? I'm puzzled and would appreciate some confirmation and clarity here. 

I also should mention that due to a misunderstanding and colossal miscommunication on the part of certain reps of yours last year that there are technically two accounts linked to my current address and I need to get the second one removed and closed down to avoid further confusion on my end and yours. When I signed up initially last year, due to that misunderstanding and miscommunication, I was under the impression that that initial account had already been closed down as per my request, and it's annoying to see that it wasn't. Any help to this end would be appreciated.