AIG WarrantyGuard Inc. Whirlpool Run around and refusing efficient, effective resolution Jeffersonville Indiana

We purchased a new home 11/2015 and moved in 2/2016.  The kitchen appliances we have are all Whirlpool and Whirlpool offered and extended warranty plan through AIG WarrantyGuard Inc.  We extended the warranties for 4 appliances through 2/2018.  On August 6, 2017, after 18 months of use, the microwave oven combo stopped functioning all together.  I called AIG to file a service claim and I was told someone would get back to me to set up an appointment to check out the unit.  

On August 8, 2017, an authorized technician came to our home to look at the microwave oven combo.  They otained error codes from the unit and spoke with a Whirlpool technician.  The Whirlpool technician told the tech in our home what parts were needed.  The tech in our home said he would order the parts and let us know when they were in.

Two weeks later, on August 22, 2017, the technician came to our home with parts to replace and hopefully fix our micro.oven combo.  The parts did not work. The tech called Whirlpool to speak with a technician and was told to order different parts. He said he would place the order and call when the parts were in.

On August 28, 2017, the technician came to our home, yet again, with the supposed correct parts, and, yet again, the parts did not fix the problem.  The techician called Whirlpool again and spoke to technician from Whirlpool.  They walked him through several steps and ultimately told him that he needed a different part.  Again, we were told that the part had to be ordered and he would let us know when it was in.

September 9, 2017, the technician was back out to our home with yet another new part.  Again, the part did not fix out unit. Again, he was on with a Whirlpool technician and again, another part has to be ordered.  The scenerio continues as before.

I called AIG to demand that the unit be replaced because it is obviously not being fixed with new part after new part.  The first AIG supervisor told me that I had to call Whirlpool directly to get authorization for the unit to be replaced.  The 1st supervisor supplied me with Whirlpools direct phone number.  I called Whirlpool and 2 different managers said that it is out of Whirlpools hands and up to AIG to authorize the replacement of our micro/oven combo.  I called AIG, again, and spoke to supervisor #2, who stated that it is only a fix and repair policy.  The policy also states, however, that AIG can authorize the exchange of our product with a replacement product of similar features and functionality.  When I read this to the 2nd supervisor, she said that the product would have to be deemed unrepairable.  We are going on 4 attempts with different parts and no resolution to having a functioning product. I asked how long I have to wait until it is considered "unrepairable."  This is totally unacceptable service and the product should be replaced.  Unfortunately, I just get the run around and each company wants to make it the others responsibility.  Obtaining resolution should not be this difficult.