SERVICE or lack of - how to kill a once proud brand

We bought a Defy Dishwasher last year (DDW242) . We did so as we have owned a number of Defy appliances in the past that served us well. Unfortunately this model/unit did not live up to expectations. at all As the unit is still under guarantee and also an extended guarantee, I contacted customer services for a solution on 11 March 26. Phindile initially responded rapidly, the same day, with a generic solution. Despite trying that solution there was little improvement.. On 19th March and 8th of April I sent emails to the same address without any further response. I am naturally very unimpressed with the lack of concern. and am really unhappy . This does the brand a huge disservice total lack of interest - not a brand worth having any more. sadly.