I have a 2002 Highlander. I had a new oil pan inst...

I have a 2002 Highlander. I had a new oil pan installed in August of 2017 ($650). Found out today, February 2019, that the seal is not good on the oil pan. Talked to the service department and was told I had no recourse given that it's been over 12 months since the oil pan was replaced. The original seal lasted 15 years. The new seal lasted 18 months and is costing $300+ to replace.