Red Square online store

I have numerous complaints about the Red Square online store. 1st, a newsletter were sent on 30 October 2017 with a 20% discount for their birthday if you spent R350 or more, after numerous tries and even a call to the customer care centre it was discovered the offer didn't work, it only worked hours after the email were distributed. Secondly, my delivery is due LATEST 06 November 2017 (although email doesn't state 2-5 WORKING DAYS, just 2-5 working days, so according to that false info, I should be receiving it 04 November 2017, but that's another issue). When I called customer service, I was told there is a problem with their online store, and I will receive an email on Monday (6 November 2017) updating me about the problem... How can a store have such bad service? How can I be promised to be contacted about my order on the day I must receive it, and how can they only wait until then to notify their customer about their purchase? Customer service itself is of NO help, since they just want to send my request to the relevant parties. There must be a better way of tracking your order, and being able to contact the correct persons, without having to go through useless customer care.