Failed to replace my washing machine which is still under warranty

I bought a beefy washing machine at game Mall @reeds, machine started giving me problems. Fine they fixed it first time around mind you this machine was less than 4 months when it started giving me issue. Now they have been giving me the run around for over 3months to replace my machine or give me a refund. Am do disappoint in there customers service and feedback to issue as I have to consistently call or drive there and still not getting any resolution.