Monogram Repairs needed

I’m looking for appliance repair of a Monogram built-in Refrigerator that is running too cold & freezing food. Many repairman don’t service this brand so I’m looking for specific referrals. One repairman replaced board & temperature sensors, no real improvement. Shuttle of the meat drawer temp did help a little, I think it’s an issue with the bottom fan running non stop. Thank you any referrals.

Model ZISS420NRKSS