No communication

I'm disappointed in the way they handled clients.I bought a hisense washing machine on 24 March 2024 use it for the 1st time Monday 25 March, it just shows error I contacted the manager and explained the problem he said he can exchange it for another one.Today 28 March 2024 a Thrystan phoned said he's the technician who must check the machine and no one informed me about it .what kind of service is that without communication. I just the machine to be replaced or refund please