Disgusting Customer service and failure to fulfill orders due to incompetencies

On the 30th of April 2020 I placed an order with Cotton on online. The standard delivery time is 2-3 business days, however almost a month later I have yet to recieve my order. I had sent in 3 emails, all of which were never returned, and had phoned the delivery company Dawn Wing countless times to find out where my order was as I was unable to track it futher than the dawn wing depot. Nearly a month later I was updated that my order has been 'lost in transit' and will be rwplaced, however more than half of my order is out of stock and unable to be delivered. For my 'inconvenience' i was given a hundred rand voucher which is only redeemable after spending R200 or more. I have never before recieved such disgusting customer service from a retail store, especially Cotton on. The level of service I have recieved over the past month is revolting to say the least. I am higjly disappointed in the fact that no one was able to update me on the wherwabouts of my order in respctable time frame, only receiving an update 3 and a half weeks later. It is highly unprofessional of both Cotton On and Dawn Wing as thier service provider to firstly lost a parcel in transit, fail to maintain am adequate level of customer service and update their customers as well as the lack of solution to my problem. I dont understamd why, I as a customer, must be penalised by receiving less than a third of my order, because of a company's incompetencies and lack of customer service. As an international company and beloved retail store I honestly expected better. I am highly aggravated by the level of customer service. Do not online shop at Cotton On.