bought a google card

bought a Google play card the glue was old grey and black in colour and very sticky so pulled off the pin code that I need to activate it.I have been sent from pillar to post wrong contact info to Google given gave me apple in Americas no I have wasted R150 in data and air time the value of the card.I notified pickpay with in an hour that it was faulty I was told to phone Google. I managed only after week to get google.They then tel me that if I send the email from my computer that computer will get the credit.But it is for my son on his Tablet so it will be of no use.