Owners/service Manual problems of the 2008 Toyota RAV4

Engine is consuming oil. I bought the Rav4 2. 4 engine 2008 brand new. Very well maintained by the dealer's records. At the beginning of 2010, I start noticing that the oil level is getting lower every time before the oil change. I thought it was due to some leak. The dealer said there are no leaks in the engine oil and the oil consumption rate is acceptable. I don't understand how it would be, but they argued that it is stated in the owner manual. It got worse by time, now I have to add a full quart or more between oil changes just to avoid engine damage. I owned many cars before, older models, none of them required adding oil before the next oil change. After researching the matter, I found that it is not only my car. Toyota knows about the issue but does not want to fix it. I even found a document with VIN's of the cars affected by the issue TSB-0094-11 (piston ring?) consuming that much oil is not normal, and I believe will shorten the engine's life and is really bad for the environment. I bought the car because of it's reputation of being dependable and it has a big name behind it. I hope someone ask Toyota to step up and fix this problem.