poor service

on the 7th of January 2024 we purchased a cellphone by the name of Intel price R1300 at Mall of Tembisa ,wen we get home few days later the phone started to freez and also when you try to swtch it off and on again it takes 15 minutes to be on .on the 13/01/2024 we took back the phone to the store to get it changed to another cellphone and we were advised that we were suppose to come in the store on the 12/01 and when we check on the 13/01 it was my 7 day after purchasing the phone . i believe that we were taken an advantage regarding this matter now we are stuck with a freezing phone that we have purchased and it doesn't even have a month nor it didn't even had 7 days