Last time I will shop in John Lewis. Bought a Sams...

Last time I will shop in John Lewis. Bought a Samsung Tablet for my 9 years old son and within the 12 months guarantee, the tablet developed a fault. took it back to John Lewis in Croydon and been told by one of the ladies that if it is not repairable then they will replace the tablet. After nearly 4 weeks and few phone calls that I had to wait over 15 minutes on the phone to be told that the tablet is not covered the guarantee although the tablet was in very good condition. they said that it was my son's fault. What Rubbish answer. The fact is that the socket inside the tablet is so tiny and week which makes it manufacture fault design. My son is sooooo upset and started crying in the car when we left the store.
John Lewis "YOUR GUARANTEE IS NOT WORTH THE PAPER "
NEVER AGAIN TO ENTER JOHN LEWIS STORE