I've had lots of difficulty getting appliance repair. I tried to have sears appliance repair fix a refrigerator ice maker in May. They came out to do the analysis and collected $500 for the parts, but never ordered the parts or returned to fix the unit. After 6 phone calls (two per month) and 3 months, still had no parts. With no resolution, I ended up disputing the charge on the credit card which was found in my favor and credited.
(Ice maker is still broken so I don't have a great solution)
If using an appliance repair company, maybe choose a local independent company.