Grammar is no excuse and the statement they're making is at the very least misleading. Whether they're limiting the quantity, the speed or anything else, what they are offering clearly has limits.

I've heard of companies getting taken to court and ordered to change branding, slogans, advertising, etc. for far less. Usually however the companies get taken to court be competitors for making sweeping BS statements in advertising. Like "best" "most" "fastest" etc.

I suppose the amount you owe at the end of the month may not have limits. Maybe that's what they mean.