Unprofessional business conduct

We purchased a brand new watch for my daughter at NWJ on 29/11/2017. We took the watch back, several times, to have the band shortened , to have the flat battery changed and on 18/02/2018, to have he diamantè replaced that had fallen out on the top of the watch. We were told that it would cost an extra R135 to replace these diamantè. It is now 23/05/2018, we have not gotten the watch back yet. The store promised that they would replace the watch, but it stays at empty promises. I tried to phone the head office in Durban and asked that the lady, by the name of Remona, phone me back. She did not phone me back, but instead phoned the store manager in Menlyn Mall ,to inform him that the new watch is being sent. So, to make a long story short. This store was very happy to take our money, but was not happy to give us a product for our money. For 3 months they could not give our watch back, or replace it nor give our money back. Beware- this store *****s people's money! They do not conduct business in a professional way with integrity and honesty.