poor customer service

My husband purchased a pair of shoes in may 2017 and I wanted to change in for a different colour the sales lady was very helpful and said she will put threw the order and it will take about two to three weeks and they will call me to advise when the shoe is in the store. I then when into the store in July 2017 to check on the status of the shoe only to be questioned as to who did I speck to when did she order and what shoe did I want because there was no request for that shoe on the system. The lady that helped me Jenny the store manger she said not to worry, the shoe will be in store in two weeks and they will call me. At end of July or beginning of Aug I called the store and a guy answered and said that the shoe is in the store that afternoon I got the store and Jenny was there and I told her that I called and a staff member advised that the shoe is in store she said ok and went to look for the shoe so I asked why did not they call she said sorry. She returned to tell me sorry they can not find the shoe and they took my details again and said they will call me by this time I was so frustrated and furious. I told her I need the shoe and I'm travelling overseas she said don't stress and they sorry the when the shoe arrives they will call me. In September I went to check the status of the request can they said yes they have the shoe however I did not take the shoe because it was more that two weeks and no one called so at the end of September I went to get the shoe and the shoe was not the colour I requested. I'm so disappointed with the level of service received. Its been 5 months and still I do not have my shoe.