Shadow refuse to take a fualted shoe back

I bought a shoe a month ago at SHADOW FOOTWEAR trade center which I only had on once<br> it broke completely while I was at work , I return the shoe they exchanged the shoe for another pair.<br> <br> I returned the shoe back to them as it is uncomfortable the other side is too tight it feels like its a size 5 even though its a size 6<br> I advise the Fahiema 'she is from head office \ she advise me that I should start shopping at Woolworth's hence their are uncomfortable