Had the above range delivered in early December 2020...have had problems with the preheat since the beginning...When I preheat to 350 it says its preheated but actually takes an additional 10-15 minutes to reach that temperature. I have emailed and they told me to reset the power which we did...then they told me to have a service person come out...two service people GE AUTHORIZED stated that it "WORKING AS DESIGNED"...and that it takes an additional amount of time to actually hit the preheated number...I called customer service...the first woman told me that the original case number was closed because a service person was dispatched. Then I spoke with Kylee in consumer relations who told me she was the only person I could speak with or call back to speak with someone else but their policy is that I could get money off an upgraded appliance but that they would not replace or take money off this new appliance because it is "WORKING AS DESIGNED"... I asked to speak to a manager and was told that managers do not take outside calls and that I could write to PO Box 1780 Rapid City SD 57709 but could not address it to anyone in particular. GE at one time was a great upstanding company and now the products are SUBSTANDARD...