Disappointed in Samsung's service

I have always had confidence in Samsung's products but my faith has been shaken when it comes to their service. I have a Samsung dishwasher and it has stopped working with an 'E3' error code. I have tried to contact Samsung to ask how to clear the code, what might be wrong or to arrange for a technician to come out. I cannot get through to their call centre using their specified options for technical service on an appliance. I have sent 2 emails to the email address specified on their website (***) and submitted an enquiry through their website. All with no response. Based on this service, my chances of buying another Samsung appliance are slim.