Bosch Siemens Home Appliances
Frustrated with fault not fixed

I now have had my dishwasher for 2 months and have just spent the last month trying to get it fixed under warranty. The technician had come out twice, once to have a look and another to replace parts, but the first time I tried to use it after that, it was faulty again, giving the same error. I paid a huge amount of money for a top-of-the-range machine that I have not been able to use. Call ref 1833047. I am now waiting again for him to come out.

Have this fixed, or exchange it, or give me my money back so I can get a dishwasher that works!