Refused to refund

11/10/2017 - purchased a Lenovo Pentium laptop at Game Eastgate. 9/12/2017 - Returned faulty laptop for repairs. 10/1/2018 - Collected and and returned it same day, same problem. Requested a refund from Mohammed the manager who refused although written warranty policy state: "Should that that take more than 21 days item will be replaced or refunded." He decided to change Game 's written warranty verbally, said will consider refund after third return. Still without laptop for a second time while my warranty runs out for an item i can't even use. Who will reimburse me for my time and fuel expenses.