Surprise! Not exactly positive ... Or is it?

My beloved and over many, many years (10) Rugged Phone (also a Gigaset) has slowly given up the ghost about six months ago. It was permitted to him, but it needed a new apparatus.
As a critically thinking person I plowed my way through countless phone deals, reviews and respectively chose this apparatus, because he was my previous a.) So similar and b.) The positive reviews the negative outweighed.

So I bought the apparatus to the day six months ago and was satisfied. At this point, no technical data may be expected from me what he does everything or not - which I lack the know-how. He has absolutely meets my requirements.
For the past week, however, the batteries are not charged when the device is in the charging station. Although it is signaled by a tone that it is properly positioned, but the charging clamps.
Currently, I am in contact with the Siemens service and am excited to see how it develops ...

For me it was a surprise that obviously the life from such phones has decreased massively. Six months' survival, "I find, however, hairy for the price.
A cautious recommendation may be, but to accept the less good reviews to heart. Unless the Siemens service turns out in the next few days as accommodating.
If that's so, I'll update in any case in this review.

Update: The Siemens service is courteous. It has edited my question friendly and professional and we have come together to a good solution. The service is recommended if you have a problem with his machine!