CONTRADICTING COMPANY'S POLICY

Good day, I am concerned as to how a major store such as MAKRO deviate from a process whenever they choose. I purchased a Laptop just over a week now and I opened the package however I never used the laptop. I go back to the store to ask for a refund together with the necessary requirements and I'm refused, bear in mind no salesperson told me of the repercussions should I break the seal hence my frustration. I simply want to return the laptop for a full refund as my girlfriend already purchased a laptop for me and I now have a spare laptop with no use for it. Please explain to me where in MAKRO's exchange policy does it state that \LAPTOPS"specifically cannot be exchange when the seal has been broken. And I would respect a procedure if I had been told of this but you don't expect me to dream!!!! I don't normally encounter hiccups like this so I find this very unprofessional. MAKRO needs to update their exchange policy!!!! POOR CUSTOMER SERVICE. ITS ALL ABOUT THE SALE AND NO CUSTOMER CONCERNS. UNACCEPTABLE.....!!!"""