I find it odd that the dealer won't return your calls. When you call for a service appointment, don't they answer the phone? Since it's covered under warranty, it'll be fixed but it sounds like your dealer is not being very responsive. Have you tried another dealer (if one is nearby)? They should at least provide you with a free loaner and discounts on service. Mechanical issues can and will happen and that's why a warranty is in place. It sucks that the issue you're having is at the worst possible time. As always, I try to be as polite as possible when discussing my concerns. I had a very expensive refrigerator go bad two months after the warranty expired. Had to pay $1100 to get it fixed. I called the manufacturer and had a lengthy but polite discussion with them. At first they gave me the warranty BS story. I reminded them that refrigerators are not disposable appliances and they would not want to be known for not backing their product. They reimbursed me for the repair. I'm certain if I called with a demanding tone, they would have stood their ground.
If the dealer won't give you satisfaction, you should contact SOA.
"The secrecy of my job prevents me from knowing what I'm doing."