I have been seeing a lot of these kinds of posts lately in feedback so I wanted to address it.
Here are all the items that help deal with CC. Crests, sheilds, cleanses, bubble, stasis and even a rewind. There is lots of options to deal with it in the game.
Crests:
Leafsong - Support burst speed
Sanctification - Support Shield
Time-flux Band - Mage Rewind to past
Epoch - Mage Stasis
Soulbearer - Mage Shield
Brutallax - Bruiser Cleanse
Liberator - ADC Cleanse
Witchstalker - Assassin Cleanse
Items:
Truesilver Bracelet
Spellbreaker - Mage CC Bubble
Mesmer - Assassin CC Bubble
Unbroken Will - Tank/Bruiser heal when CCed
Legacy - Cleanse and gain Tenacity
Absolution - ADC cleanse when low
Kingsbane - ADC Shield Item
Terminus - ADC Shield item
Salvation - When Low on HP gain Shield