Timing Tensioner problems of the 2011 Audi A4

Timing belt tensioner failing at under 70k miles but Audi suggests that no need to perform any timing belt related work before 120k miles. This causes catastrophic failure on the engine and entire engine needs to be rebuilt or replaced. There are several lawsuits and complaints in several states. I wanted to officially start this complain and I'm in missouri. These tensioners and chains should have been replaced under the original warranty or an extended warranty program since Volkswagen knew these components were defective and would cause premature and often unannounced expensive engine failure. This is evidenced by the subsequent revisions to the tensioner and chain performed in late 2011 in an effort to correct the original defects.