Rear Suspension problems of the 2009 Mercury Sable

I have a 2009 merc Sable premiere, when I go over bumps in the road the struts bottom out, and the car like slides side ways. I took it to the dealer where I bought it and they looked on the internet and found that Ford says when driving over bumps the car will bottom out and this is normal. I told the service man that this was [xxx] and he said he could not replace the struts until they recall them. I asked how much it would cost to replace them myself and he said it would run $1000. To have all 4 replaced. Do people have to get killed before they will cover this? I still have warranty left on my car and I want it fixed. Thank you very much for your time. Information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).