Tire Valve problems of the 1996 Toyota Corolla

I experienced three flat ultra hp 4 goodyear tires on three different tires on my 1996 Toyota Corolla due to faulty valve stems in an approximate 4 month period (may 2005 - August 2005). The tires were purchased in January of 2005 from the goodyear dealer in sacramento, CA. I was not injured because of the flat tires. In two cases help arrived quickly, but in the July 2, 2005 incident I was stranded for six hours and it was a very frustrating and upsetting experience because my car was impounded from the highway and I had to pay a parking citation because the tow truck driver under the goodyear contract never responded to my call. When I complained to goodyear, the gentleman at the counter in the sacramento office told me there had a been a bad batch of valve stems around christmas-time 2004. They replaced my valve stems with 4 metal, truck-type valve stems and I have had no problems since. However, it has taken my two months to try and get reimbursement from goodyear for the impound and citation charges I experienced. Until last week, when I said I thought this was a serious issue and would be complaining about it, I had been told that my claim had been denied, except for the $10 tire repair I eventually was able to get on 7/2. This week a new representative made contact with me and I may be refunded my expenses.