Bennet read vacuum

I bought Bennett read vacuum November last year through take a lot and i hardly use the vacuum. June it started to give me problems and i did send it back ,I specifically said that i don't want it fixed because it still has warranty i want a refund so that i can buy another one. What is the point of fixing the vacuum because clearly it will give me problems again .They insist on fixing the vacuum according to Take a Lot they don't want to refund me.As a paying customer i have a right to decide whether i want the vacuum fixed of money back since it is still under warranty