Total useless products sold by Totai

We have a Totai gas/electric oven that is 3 years old. The selector switch broke a year ago, and since then we have been struggling to find a new switch. Totai has been using the same excuse now for a year, apparently they are out of stock and are switching over to a new supplier. Does that whole process take more than a year? And how are we suppose to cook in the meantime? So we have a new oven, that is basically useless as we can't use it. If Totai can't supply parts that has broken on a new oven, then maybe they should stop selling their products.