Bought winter tires they have less than *k on them currently.*Tires never keep air and...

Bought winter tires they have less than *k on them currently.*Tires never keep air and been bringing back to get repaired.* Most recent I have ran over a " Nail " and since my tires are studded they can not replace my tire.*I paid over *** dollars for faulty tires that never keep air to have them " fix it " and it keeps happening.*I am living on a budget and cannot afford to buy new tires as these tires costed me quite a bit ! *I bought the tires at walmart because of the road hazard fix policy and the fact they rotate when you buy a set of tires.*I rely heavily on my vehicle for work and currently my car is in my driveway with a flat tire ! *When I asked them to fix it they said it was un repairable and said it was " dangerous " to repair and told me they cannot put a new tire on as the others are studded and they need to put on all season.*I am extremely upset and I want a refund on all * of my tires I am sick of dealing with walmart tire center.*I spend about a *,*** a month at walmart I am a good customer and these tires are faulty and I am in a terrible situation where they do not want to help even though im elligible for a " new " tire....*I want a refund on the tires !*Corner Brook, Newfoundland *Paul Rowsell