Refusal to repair a 2 month old appliance warranty

I have my partner paid for 54igsten birthday a Galaxy S3. The mobile phone was from the beginning in an original Samsung Flipcase.
After almost 2 months, at 01:11., They found that the phone after they had taken it out of her purse, no longer worked. The screen remained dark. There were definitely no external defects, to recognize the phone.
I have a cell phone then sent in for repair to w-support.com and got after just 1 week from [email protected] the news that the screen is defective and Amazon / Samsung recognize any guarantee would (see below).

Mechanical damage of the display is not subject to warranty! Part repairs are not possible! Any errors you provide will be resolved in the course of repair. The cost estimate is subject to a detected in repairing irreparable damage.
>> Notes to the estimate and payment
>> View Acknowledgements for photographs of the damage to the service contract proof image of the damage
Ref. Description Quantity Discount Ust%
40-08-8178 Display Repair 1 0 168.00 19

Shipping
40-06-8035 Standard delivery 4.29
Total net: 172.29
VAT: 32,74
Total EUR 205.03

After this experience, I would advise against it, to buy on Amazon, a cell phone or other electrical appliance. For this I must say that I have already bought a lot of equipment at Amazon, but have never had to take a repair service.
The worst thing is that we could see both no external defect and then get a picture of a broken screen sent. Unfortunately, I do not know how to add pictures here, otherwise all could look at it as the screen should look ostensibly the inclination towards any defects with us.
The next Hammer are then the repair costs of 205.03 euros. The prices for a new Galaxy S3 catch at billiger.de at 260, - Euro to.

Regards,
Tit