absolute scrap; and the customer service is a rip-off

I am writing to customer service, because there is a problem:

Good day,

My query relates to the Gardena 2656-20 Wandschlauchbox roll up. The product was protected from the elements assembled and dismantled in the winter, so it has never gotten frost. Due to the small garden hose has hardly extended to the entire length, were used mostly max.10 meters of available Schauches.
Yesterday I mounted due to the spring-like temperatures the hose box in the garden again. When I unrolling the hose, I heard a strange scratching from the Box I had the hose straight to the max. Unrolled length in order to clean the tubing. From this point on the hose box but wrapped the hose no longer self-evident. I
think the spring for rewinding is ausgehängt- or broken. As you can see from the attached original invoice, the unit was ordered in April 2007 at Amazon, at a price of 141.-Euro. I have taken up first with Amazon contact to clarify responsibilities. Amazon I got the information, I may sit down with Gardena in conjunction, as the warranty claims selenium expired clear after nearly 7 years.

My question: is possible to repair the hose box cost? Or does the defect economic KO of Hose? Does it make sense to repair the hose box itself? When a repair is possible, how much does it cost to repair? Based on my research on the net, and the many forum posts relating to the defects of Schlauchbox- see Amazon- I want to emphasize at this point that I faith- not open the device I'll wait until
I get an AW of them.

The AW of customer service:

Unfortunately I can not tell if a repair is possible, without having seen the hose box personally.
A repair would 80 incl. VAT matter if the wave or the latch holder is broken.
An exact price information I can give you but unfortunately not exist without that we have the box checked.
The price of a new Wandschlauchbox is betw. 80 and 130 (depending on model)
For further questions I am happy to help.
Sincerely / Best regards
After Sales Service - Gardena / McCulloch

My AW to customer service:

Thank you for your reply,
I opened the hose box. The defect is the breakdown of the central hub, see photos. Please say whether the spare part with the seals is available, and Pricing.

AW of customer service:

Thank you very much for your email.
Unfortunately, there is the part you need is not as spare parts for sale. You would need the box, please, as it is written down, send it to us so that we can repair the Wandschlauchbox. For further questions I am gladly at your disposal.
Sincerely / Best regards
After Sales Service - Gardena / McCulloch

I'll send the box completely so dismantled by mail to 15.- Euro to the service address in Ö and receive 14 days later following email:

In the appendix we will send you the quotation for your product.
See attached file
... We have tested your machine extensively Gardena. We have found that the shaft and the pawl holder is defective. Rusted steel spring clamping force of the spring is reduced by rust. Unfortunately, we have to look at your device as a total loss. The reason for this is the Arbeistszeit and materials make an economic repair is not possible, therefore repair is unprofitable.
Sincerely / Best regards
fter Sales Service - Gardena / McCulloc

Two weeks later I get back the box, and has about 40.- Euro COD fee estimate and mailing costs paid. And although I had the div customer service. Photos sent which showed the defect clearly, and Box also itself completely disassembled contra. The customer service knew about defect clear decision, but the box should still around I send for repair special for a lot of money in the area is also completely unnecessary. Never again Gardena, not even a hose coupling