Terrible quality bed sheet

About a month ago I went to Sheet Street in Malvern. I purchased a queen size cotton fitted sheet. For some reason it never fit tightly over my bed but I just overlooked it. The most disappointing part is that after the first wash the sheet is fraying all over and is not extremely uncomfortable to sleep on. I paid slightly over R200 for it. Now I don't want to take it back to the store as I have thrown away the slip and I know it's going to be additional drama in the store.