Bought a blouse from a Wallis concession in Debenhams a couple of weeks ago. Fitted fine so threw receipt away (paid cash). Wore it today for first time so cut off tags and happened to keep them. Within 3 hours the blouse had developed 3 huge pulls down the front...looked awful. Was at work so had to wear it for rest of day. Can take it back tomorrow with tag and carrier bag but no proof of purchase. Assume it will still be in stock but they may not have my size. Happy to choose something else but not sure they will agree to it.What do you reckon my chances are?!