Currys review: Microsoft office 365 subscription

recently I purchased a PC online with Currys and PC World with the bundle of Office 365 McAfee security and Currys iCloud backup. On setting up the computer I tried to remove the silver strip on the back of the Office 365 redeemable voucher to which the number smudged and even some fell off. After contacting Microsoft they advised me to go back to the Currys store to resolve the issue. In the store I was there told that this was a Microsoft issue and therefore should resolve it with them. However, after speaking to Microsoft again they brought up that because I purchased this with a third party it is their responsibility. After contacting Currys again online they said this was a store issue even though I had already been to a store. So I decided to contact Currys by phone. After speaking to two departments I was dismissed again and given another phone number to contact called the product activation team which was an unrecognised number. I therefore look forward to hearing from yourselves before involving Trading standards.

Thank you, Neil Gurmin