Whirlpool Washer - Cabrio Top Load WTW6600SBT Review

After owning my Whirlpool Cabrio Model # WTW6600SBO for two years I still don't understand how or if it cleans sheets on any cycle much less the designated "towel/sheet" icon. It wraps them up in a tight ball shortly after the washing cycle starts and the sheets stay in a tight ball until the machine turns off. After the machine stops the sheets are still in a tight ball inside each other. After watching the complete cycle I know they stay in the same ball throughout the complete washing cycle. The question is whether they actually are clean. What a ridiculous concept. The attached pictures are two king size sheets along with four pillow cases. You be the judge. FYI the matching dryer Model # WED6400SBO does the exact same thing.