De’Longhi Magnifica Evo Milk Container Not Recognized

I have been experiencing a serious issue with the milk container of my De’Longhi Magnifica Evo coffee machine for approximately two months. Although the milk container is correctly attached, the machine fails to recognize it, and the indicator lights for milk-based coffee options do not turn on. As a result, I am unable to prepare any milk-based coffee beverages.
To resolve this issue, I contacted an authorized service center. I was informed that the switch needed to be replaced, and I was charged $50 for the repair. I paid the requested amount and collected my machine, expecting the problem to be fixed. However, the exact same issue persisted even after the repair.
When I took the machine back to the service center, I was simply told that I had not attached the milk container properly. However, the container was correctly installed, and the machine continued to display exactly the same malfunction. No effective solution was provided, despite the repair fee I had already paid.
Although the warranty period has only recently expired, I am extremely disappointed that a product from a premium brand like De’Longhi has developed such a problem and, more importantly, that its authorized service center has failed to resolve it despite charging me for a repair.
I am therefore requesting that De’Longhi take responsibility for this unresolved issue, ensure that the milk container recognition problem is permanently fixed, and provide an appropriate resolution for the inconvenience and financial loss I have experienced. I expect the company to address this matter satisfactorily, especially considering that I have already paid for a repair that did not solve the original problem.
