Defective fridge

I bought a samsung fridge from Dion Bedford center. After days of utilising the fridge, I a funny noise from the rear of the fridge. I went to the store to report this matter. I was given a job number and told a samsung technician would be in touch. Weeks later, the noise has increased, and a rude samsung technician calls me to tell me that he is only available to check the fridge at a time that is not convenient for me, since I'm at work. This matter is still unresolved and the fridge is getting worse. I have been greatly inconvenienced by the service rendered by both Dion and Samsung.