Incorrect purchase

14/03/15 I purchased Gillette cartridges . When I reached home I opened the pkt to find that I had purchased the incorrect cartridge. I went back to the store . Dale the manager refused to exchange them for the correct ones as I had opened the pkt. He gave me a lecture on how I should check the pkt before purchasing as if I was a child. On the 16/03/15 I reported the incident to Spar online and telephonically to Janine at head office customer care . They both promised a response within 7 business days . Today 13/04/15 after mailing them again and leaving a msg telephonically I still await a response. Spar has lost a customer . Clicks replace cartridges even if they are opened as long as you produce your receipt . I reported the matter to proctor and gamble who immediately offered me a voucher . I did not take up there offer as I feel it is spar \s responsibility. Good for you to support us . Not good for me when I make a mistake ."