Hello Jai2937,
Welcome to the community!
Firstly, you should note these forums are community-driven and not intended as a venue for customer services. We would not have access to customers' accounts nor any details of that particular offer.
That said, I don't think the cost of any plan offered would remain unchanged indefinitely. So, I assume the cost for that plan would eventually increase. However, we would not know for how long the price for that plan would remain the same. If you wish to verify the details of your particular offer, you would need to contact customer service. In addition, they can also be contacted via Live Chat, Facebook, or Twitter. Those methods can be accessed via the contact page posted above.
Hope this helps 😀
Cheers
