Truworths hemingways Horror service

My wife bought a dress for her granny at the hemingways store, when we got home it did not fit properly so we went back the following morning to have the size changed for a bigger size alternatively take another dress. We were informed that we could not take another dress, we needed to bring the exact same bank card that the dress was bought from, My wife had left her wallet at home and we had to drive back 38kms. Same dress different sizes straight swap