Second Whirlpool 6th sense dishwasher

We decided to buy a Whirlpool 6th sense dishwasher as the salesman ensured us that Whirlpool is a reputable brand with good customer service. This does not appears to be the case. We got our first dishwasher and eventually it became faulty with a error code. Whirlpool sent a technician out that was not equipped with the correct tools to do the job, as he needed a laptop to diagnose the code. Eventually a second technician was sent out who had a laptop. By this time, we had convinced head office to replace the unit with a new one. Now the new one has a error code and again it is a faulty sensor. Whirlpool does not have stock and will take 3 weeks to get the part. Also this fault was not diagnosed with a PC as this technician was not equipped with a laptop as we experienced previously. We are not happy with this model dishwasher as it seems the sensors are a ongoing problem on these models. Every time we need to deal with Whirlpool customer service it is so frustrating, as the service a person receives is not good, its technicians have bad attitudes and incorrect tools and there is a lack of parts. Bad product with bad customer service.