WORST SERVICE EVER FROM SAMSUNG

I took out a new contract with Vodacom in mid July, the cell phone I picked was a Samsung J1, the receiver was very distorted, so after visiting a few Samsung agents nothing was resolved, I then went to Samsung Pavilion who took the phone in on the 26th Aug and they said it would be ready in 5 days, after 10 days I phoned the service centre and gave them the job number and was told \this is very bad service and will get their manager to phone me