Funny, I'm going through a similar issue with getting my 2004 Mazda resealed. It's actually back in for the 3rd time in 3 weeks for what was supposed to be fixed the first time. But since I've had it back it still leaks, my coolant started mysteriously disappearing, and it smoked when at operating temp. Before it just leaked. The dealer has it now and said that the oil pan was still leaking and they were going to fix that then investiagte the coolant issue.
So, yes, I would continue to bring it back until it's fixed. I would like to add that the customer service at this dealership has been great and the prices are very competitive. However, the pleasantries need to match up with the product.