Horrible service and lies regarding warranties

I'm extremely disappointed in the lies and bad customer service I received from MTN Clearwater mall. I bought a Oppo Reno 5G on contract and wireless earphones were included. I was told in store that if I experience any problems I should bring it back and their technicians would look at it. When I used my wireless earphones, one side was not working. I went in store today and asked if it can be looked at and I was told that the earphones were not part of the contract and I was refused any help. The overall service in the store is disappointing and the staff treat the customers extremely rudely and they are not friendly. This is my first experience with MTN and it is not a great one. I have read through the contract and there are no exclusions regarding the warranty or the accessories.