Is it the wiring in the oven, or the wiring to the oven, that needs to be redone?
If it's the wiring to the oven, I'd call an electrician for an estimate. If it's the wiring in the oven, I'd call an appliance repair person (or possibly an electrician)
I agree that getting an estimate on repairing the oven is probably your best first step.
Get an estimate to fix the oven.
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check where you live, look for a scratch and dent place.