No refund

I bought a bluetooth speaker and returned it to their store as it was not what i needed. They refuse to refund me but said i can take anything else for the same value. I declined their offer as i would prefer to get my money back. The owner refuses to speak to his customer, only communicate by email, the store manager Eben only works according to his instructions not to refund. I find this unacceptable for not wanting to refund me, according to the CPA i can request a refund on this item. They have very bad attitudes and it seems as they think they are above the law and can do whatever they want with their customers and our money. Why Would i want to take anything else i dont want and at the same time support them. I WANT MY MONEY BACK<br>