Thinking my Zanussi Washing machine needed a replacement door seal - it was not leaking but looked a horrible colour I called for your engineer to look at it. He came as arranged and agreed with me but I then had to wait for the part to be ordered. When it was available, a different engineer came to do the replacement BUT said the seal did NOT need replacing. So I regret he had a wasted journey. Wasted time all round for me and your engineer - it is NOT a question of cost because you have refunded cost of new seal - but why did the two engineers opinion differ?