Hi I'm in need of some helpful advice on how to proceed with this please. 3rd July 2012 I purchased a Samsung Galaxy S III Marble White 16GB online from Tmobile for £200 (capital one credit card) + 18mth contract (£26 ish). January 2013 it became faulty and Samsung sent a courier to collect it and Regenersis in Glasgow repaired a faulty usb connector on 21st Jan. Unfortunately I have no proof of this, but Samsung are not denying that this took place (so far). 11th June 2013 I awoke to a completely dead phone and took it to an authorised repair shop who deemed it Beyond Economical Repair due to an unauthorised repair on the usb connector Basically he explained that he didn't believe that the repair was carried out by Samsung (flux residue around charging point) and the warranty was void. You can imagine my surprise and anger at being accused of such a thing. I rang Samsung and explained and they said send it in for inspection. To cut a long story short today I have received the decision from Head Office that they will not repair my phone free of charge as they believe it has had an unauthorised repair on the usb charger and is subsequently out of warranty. Basically Samsung believe that I got the usb repaired via themselves in January under warranty, then paid somebody else to repair it again in the meantime. And the actual customer care woman (Laura) said that they "Believe their technicians more than they do their customers" and that " You can't prove otherwise"........... Tmobile are not interested and I now realise that not going through them for the repairs was probably a mistake. Consumer Direct have advised me to check my contract with Tmobile and formalise my complaint with my credit card (consumer act 1974 sec 75), samsung & tmobile (sale of goods act). I'm prepared to see this all the way through as I think it's an absolute outrage. I'm just feeling a little wobbly as how to go about it and how I can prove I'm telling the truth and would appreciate some guidance. I am not prepared to have my phone repaired at a cost of £120 (even under protest) as Samsung have deemed the 2yr warranty now void, which means I will lose the remaining 13mths left of the guarantee and have to pay for any further repairs required. Can I only claim the £200 from my credit card company? Or as it came as part of an 18mth contract can I also claim/cancel the remainder of the term? I've attached the the image that Samsung have sent me of the "proof" that they based their decision on.

My daughter went into a local car radio shop and they told her they could not do the repair but suguested another shop where it could be done. The other shop did the repair and charged her £100. A week later the radio stopped working, she brought it back and was told they could not rectify the repair. A refund was requested but they would not give a refund only a credit note. The question I am hopeing for advice on is can she demand the cash back or not. Thanks in advance for any help.