Bergens Helderkruin useless

My fridge did not want to cool sufficiently anymore, so I requested Bergens Helderkruin to check it for me. They informed me that it needed a new compressor and regas and would cost R2990. I opted to rather buy a new one. I requested them to return the fridge. I consulted youtube on how to test the compressor, and on return I confirmed that the compressor was working fine. The problem was that the cover at the back restricted airflow over the condenser resulting in the poor cooling. I left the cover off and now it works fine.

Due to them I now sit with 2 fridges and lost R4200 that I paid for the new one. I do not trust them anymore and will not send any appliance there ever again.