BASH employee negligence

I am absolutely frustrated and dissatisfied with the services received from BASH online shopping app. I purchased a YSL Black Opium EDP gift set consisting of the 90ml fragrance, 10ml purse perfume, and Lash Clash mascara. Upon delivery, I did not receive the gift set at all but just a 90ml fragrance bottle. I reported the missing items as this was meant to be a Christmas present for a loved one. A customer care consultant by the name of Siphokazi reassured me that they would investigate the issue and get back to me. She had found that the items were sold out meaning that the employees at Foschini Springs Mall had taken it upon themselves to simply pack the 90ml fragrance without the gift set and send it off to me without notifying me that the item I had ordered was out of stock. You can imagine my shock at this! Employees are clearly not following any protocol or retail procedures and are doing their own thing. The consultant asked me if I would like a full refund or a gift voucher to compensate the missing items. I wanted a refund but she had stated that it would only be processed and funds returned to me within the new year. I enquired on the amount the voucher was and she stated that it would be a R500 gift voucher for an in-store purchase since I was dissatisfied with the online BASH services. Please note that the YSL purse perfume alone costs R800 and the Lash Clash even more but I settled on the R500 voucher hoping that the matter would be resolved before Christmas. A follow up email from a different customer care consultant revealed that I would receive a 25% discount off a minimum R100 spend on the BASH online store with the excuse that this was their maximum voucher they could give and that there was no R500 gift vouchers available. This is a poor excuse. I was first promised a R500 instore gift voucher initially. How does one jump from R500 off to R25 off!? Why do different consultants deal with the issue? You would expect to have only one consultant work on your case. The whole customer care service feels like an automated message with no care whatsoever. I will never order again from BASH as I do not trust the service or the employees to follow simple procedures. This whole issue could have been avoided if I was notified that the gift set I had purchased was out of stock. From 19 December, I have been dealing with back and forth emails with a different customer care consultant responding each time. It is ridiculous, a huge inconvenience and such unnecessary hassle.