Currys PC World

I purchased an apple IPad 32GB 9.7" screen from Curry's PC World in Chichester on 11th July 2017. The cost was 339 pounds, charged to my Australian Credit Card Included in the purchase was an IPad protective cover and a cover for service and guidance at no cost. This cover was offered, as they were too busy to assist with transferring information from my existing IPad. As I was flying back to Australia on July 22nd I didn't require the support on an ongoing basis. I now find I have been charged 6.50 pounds under reference Product Support AG08448006080 on 11th August. Would you kindly refund this amount to my card, details are obviously retained and cancel any further support charges. Yours Robert May