OpenDNS is your friend here. Set up an OpenDNS account, configure it to block the ad servers for <your_tv_brand> e.g. ads.samsung.com, then set your TV to use the OpenDNS service for DNS. It will be able to connect to the internet but won't be able to serve you ads, at least until they change the ad server name. Set up OpenDNS before you setup your TV - some TVs cache ads once they've connected to the server, meaning if they're disconnected or can't reach the ad server they'll just cycle through the ads they already have cached; which defeats the purpose.
Certain services might stop working if you block the ad service; Samsung are sneaky f*ckers in that they've tied their 'app' services to their 'ad' services - so if it can't reach the ad server, it won't let Netflix or YouTube load either. Illegal, immoral and unjustifiable, but there you go.
tl:dr> Samsung are scum, don't ever buy from them. Find their legal people on LinkedIn instead (search for Samsung in house counsel) and send them a short note telling them that, and inviting them to put their ad services in an appropriate orifice.
Biting the hand that feeds IT
