Bad customer service and poor product quality

So on the 28-01-2022, I logged a call with Hisense for my dishwasher that had 2 problems.

I've been waiting since then to get a technician out to check on the machine. The 1st technician came only on the 03-02-2022, more that a month later, which was unable to fix the machine and said other parts is needed. Then on the 12-03-2022 another technician came to fix the machine with the part. But he was only there to fix one problem, apparently not know of the other problem. Then he failed to fix the 1 problem he came to fix and said he need to take the machine with him to the workshop.

So today I called to do a follow up on my dishwasher, called the number, ***, lady said to me she reception and not customer care very rudely. I then call the technician asked him for feedback, and told me the the 1 problem is fixed. I then asked what about the other 1, he said he don't know, they did reset the machine, but the error light is still there, we must just ignore the error light. This is not acceptable for me, just ignore the error light, where in the world is that normal?