Obviously. Every new plan from cheapest to most expensive has 2 years loyalty contract.

If he bought as an add on, yes can take away. But if he bought as a package, then cannot. I have heard of this T&C many times.

So for TS, its better to grind it out for 2 years and then opt to sub only internet plan. Or if you are smart enough to play the unreliable service game with them and file an unsatisfactory service with tribunal to get out of it.