leave well alone

Bought this oven because were upgrading our kitchen, one of three Whirlpool new appliances.It was delivered on the 26th June but we were still having our new units fitted so it was not connected up until the 18th of August. Simple connection attach a plug and away you go. Done the initial start up procedure of 1 hour to burn off any factory residue. We then cooked our food for another half an hour. All going well until when i checked the oven later in the evening there was no life and it had packed in. Contacted Whirlpool who sent one of their engineers out to repair the now defunct brand new oven. Found a faulty part so he left saying he would order the part. All ok so far but then i got an e.mail the following day to say the parts are out of stock. What ! this is one of their new models. Not heard a word since so we are left without a new oven and not sure when we will get it repaired. Very expensive for a lot of hassle. What a total shambles from Whirlpool. i have a few of Whirlpool products but this will be the last.