Terrible customer service - istore Pavillion

I purchased a pair of headphones Beats x black from istore on the 5th of November 2017 I used the device for less than 2 weeks only to find that the battery life is not as per the claim of the manufacturer

I took the device in on the 19th of November to request a credit and was told I could only return before 7 days.the lady at the store told me that i must book the device in and if it's found faulty than they can issue me a credit of the purchase value less 10% handling fee.

On Friday 24 November I was informed that the device was ready for collectiion.i went in to the store and was advised that they will give me a replacement unit as my unit was faulty.Upon requesting my credit as I did not want the item any more I was refused my the manager.he said I have to take a replacement unit and a Credit will not be possible. I mentioned the consumer protection and his response was that they follow istore rules and not the consumer protection act . ***??

As is it the manager looked so scruffy and untidy i wasn't even sure that he was the manager of istore.

If I purchased the same unit from elsewhere like takealot I wound have never had such an issue. I will never ever but anything again from the istore