Samsung — Refrigerator not repaired and charged money

Address:

mughalsarai ,chandauli 232101

I have called samsung service center to repair my refrigerator...the person came and was unable to identify the defect he fooled me by replacing some parts and charged Rs.2000 but my refrigerator did not start ...again when i called him he did not pick the call and not coming again. This incident is of march 2021 the name of the person is "Sarvesh Prajapati".
I want my refrigerator to get repaired and if not i want my money back.
my area pincode is -232101