A wallpaper was selected from Marshall wallpaper who have been in the business for more than two decades. The chosen wall paper was applied, but, began to peel off in many corners. Upon informing the company they re-applied the paper in places where there was peeling. Strangely, there was re-peeling of the paper nd this time the company claimed they will affix the paper with stronger glue having greater strength. Wallpaper was largely stable but, began mildly peeling in some parts. Treating this as normal the issue was ignored. In the last few weeks another problem - within less than a year of application - has cropped up. There is massive black growth of mould like substance in one wall. This is inexplicable because it has surfaced only on one of the three wAlls. It is not eliminated upon wiping with wet cloth as suggested by company, but, does subside somewhat. However, now am left with a wall with increasingly black patches. This cannot be the product and service on offer and ought to be replaced.