Faulty watch and they will not refund me

I bought a TEMPO watch last week Sunday at the Wesgate mall branch. The following Friday (07/08/2015) my watch would not come off my hand ( there was a fault with the loops that the straps go through) it was stuck, and after struggling for over an hour, the only way i could get the watch off was too cut the loops off. I thought being a TEMPO watch the process of getting my refund or replacement watch would be effortless, but when i returned to the store- The RUDE shop assistant told me i should have come to the shop with my watch on and show them that it wouldnt come off my hand. she treated me as if i chose to cut the watch off, She then said i lost my guarantee and the watch was not faulty, i may have put the watch on incorrectly.,. Now who says things like that? There is only one way to out on the watch, obviously there was a fault somewhere that the watch jammed like that. Clearly this was a faulty watch or something was faulty on the watch itself, the attitude of the shop assistant did not help much, and i will not settle with 'its not our fault you didnt put the watch on correctly' i want my refund or replacement watch!!!