Marshalls Wallpapers — Wallpaper peeling is off on wardrobe

Last month we had put wallpaper on our wardrobe through Marshall's but within a week it started peeling off. After lodging a complaint and several follow-ups a technician came and fixed it, but again within a week it started peeling off badly at multiple places. I have now lost faith in your product and service completely and therefore want a refund immediately.