Customers should come before employees

I went to total sport in fingoland mall in butterworth and i was assited by a nice sales lady on the floor, was looking for comfortable shoes to work with i then told her to keep my shoes at the counter and i went to fetch my card at work, when i came back the cashier told me she sold my shoes, very light skinned lady, firstly i have workes at retail and i know very wel she didnt sell them she kept them for her self coz they were marked down to R375.00, this was not okay