Terrible customer service from Russells Rustenburg branch

On the 23rd November 2018 I took advantage of the black friday specials and bought my mom a bedroom suite at the kempton park branch as I am based in kempton Park, to be delivered to Rustenburg as my mom is based there. The sales guy assured me that the items will be delivered on the next Monday or tuesday (26th or 27th November 2018) and as promised the goods were delivered on the tuesday the 27th of november 2018 however, during assembly the delivery guys noticed that 2 door handles were missing and they acknowledged that the fault was with them for not checking if the items were all in order before delivery, and as such, they assured my mother and me that they would arrange with the Rustenburg branch to deliver them accordingly. More than a week went by and me nor my mom received any kind of communication from the Rustenburg branch and finally my mother decided to go straight to the store to enquire about the door handles that were yet to be delivered. She spoke to a sales guy by the name of Solly Mashisi who was very unapologetic for the delay, and told my mother that there was nothing that they could do for her since the items weren't bought from their branch, on top of that He was very disrespectful even with the way He addressed my mother. My mom phoned me while She was at the store and explained the unpleasant encounter she had with Solly, I asked to speak to Solly on the phone and just as he was unprofessional with my mom he addressed me with impatience and overall a very unpleasant and unprofessional manner, naturally I got frustrated and upset, at that point he indicated that helping me would be doing me a favour, while I was on the phone he turned to my mother and shouted "ware go shota eng mama?" meaning "what did you say was short", I didn't understand why he had already turned down my mother with her query if he wasn't even clear on the query, but that just indicated his level of disrespect toward customers even those who have been wronged by the company. So I phoned my mother's cell and requested her to ask for the manager as I could tell that they weren't willing to assist my mother, the manager, Lindy van schalkwyk was just as bad as Solly, I explained the problem to her and surprisingly she didn't see any problem with the terrible attitude my mother was received with by her subordinate Solly, and unapologetically informed me how it is not her problem and that they would lodge a complain with head office. I don't have a problem with issues being handed over to head office, but what I have a problem with is the employees at the Rustenburg branch disrespecting my mother and myself when we brought forward the query and the level of unprofessionalism in handling the issue. The delivery guys made a mistake, understandable, but when there is such a delay and a customer that have paid in full for the goods brings forward such a simple and small query I would expect firstly an apologetic attitude and most importantly professionalism at the least, but we received none at this brach, I get that maybe the issue is that they didn't receive the commission because the order was done at the Kempton Park branch, but that still does not give them the right to treat a customer so ugly, and I hope for the sake of the reputation of the branch they will have to face the consequences of poor customer service.