Better Customer Service is Needed

I bought a cellphone from this store in July 2020. About 2 months later I noticed that there was a funny line on the corner of the phone. I took the phone back to the store on the 24th October 2020. The store refused to acknowledge the mark on the phone, because according to them, the phone was working. I tried explaining to them that the phone is only 3 months, and I wanted a new phone has it states on their terms and conditions. The area Manager, L Mabena asked that I go on their website and read their policy. I decided to agree to send my phone to Samsung for repairs. On the 04/12 the store called to say my phone is ready for collection, the phone was in for repairs for 5 weeks and nothing was done to sort out the phone, so the phone was booked in again. Till date (14/12) I have not received my phone, every few days I must call the store and ask for feedback with regards to my phone. ITS VERY FRUSTRATING...