Poor Customer Service Experience

I am very disappointed with the service we received at Cash Crusaders (N1 branch). My son purchased a keyboard from the store on Thursday 5th March. At the time of purchase, the keyboard wasnot plugged into a PC for proper testing. He was only allowed to feel the keys to check the mechanical action. When he got home and plugged the keyboard into his computer, it produced ahigh-pitched noise, which became louder the longer the keyboard remained plugged in. He returned to the store on Friday 6th March to report the problem. The lady who assisted him plugged the keyboard into a PC, and with a smirk said“that is what it is supposed to sound like,”before handing the keyboard back to him. My son again explained that the noise becomes louder the longer it is plugged in, but she simply repeated that“that is the sound they make.” The keyboard was sold with aone-year guarantee, yet his concern was dismissed without any proper investigation or attempt to assist. In my opinion, the staff arenot properly trained in specialised electronic products, and customer service does not appear to be a priority at this branch. When a customer returns with a concern about a product purchased only days before, the issue should at least be taken seriously and checked properly. This experience was very disappointing, and I hope management addresses both theproduct testing proceduresand thecustomer service training of staff