Failed to uphold customer policy

I honestly do not know why I bought a power bank from Incredible connection. After being yesterday at the Waterfront branch and them not having a technician on duty, I then opted to go to the Canal Walk branch as their Tygervalley branch doesn't have a technician on a Sunday. So this is the very 1st time I did a refund and was charged a 15% handling fee and have the money put back onto my debit card.

I even went back after it was done to ask cause I was told by the cashier (Qiqa Sidukwana) told me that it will reflect in 2-3 business days, knowing well it can take up to 14 business days. And then being told by the manager on duty that "if it doesn't reflect I have to contact my bank." I will honestly never ever ever buy from Incredible connection again.

Also being told by the Technician that he has to check the device for a few hours, after explaining the issue with the device and told him I find that unacceptable, he turn told me they will take 15% handling fee. A device that would charge 10+ hours and not even last a full day as it should.