We didn't buy those items. The false advertisement law is pretty straight forward actually.
It doesn't matter what the law says regarding false advertising when it comes to software. If you choose to forfeit your rights to litigation, you have no standing against the company.
And that's what every software company has... an End Use License Agreement. These are powerful documents that everyone agrees to, but nobody ever seems to read. And most of them are the exact same. In one form or another, they say that the software can be altered in any way without your consent, and these alterations may add or remove features that change the way the software works.
There's nothing you can do legally against this kind of thing. There are people who have filed class action lawsuits against companies and 99% of the time, they are thrown out of court, because all the software company has to do is file a counter-claim that all of their users must agree to an EULA that states they can do whatever they want, whenever they want, and there's nothing those users can do about it. EULAs DO stand up in court... just as much as any other contract.
Start reading the EULAs you AGREE to before you agree to them. They're five miles long and cover the software developer in every possible way. Your choice is whether or not you choose to agree to those terms. And if you don't, you don't get to play the game.
The ONLY thing you can do is boycott the company in question. Deal with it.