not wanting to refund R120 paid for a cover that didnt fit the tablet

<p>went to soundtech in vangate mall to buy a samsung tablet cover. was advised by the manager that the cover might not fit and can return it. when i returned it to the store they wouldnt change it because i didnt have the plastic cover. i paid R120 for the cover and it was not usable. i want a refund or an exchange for something else</p>