Waiting for my washing machine delivery - only a Call Centre number for contact is highly frustrating!!

I bought a washing machine online - was really excited because it was discounted and seemed to be arriving in very good time - I waited the whole of Friday, 24 Dec, as I was notified to expect delivery…. The delivery man arrived at my home at 8pm on Christmas Eve! Needless to say I was not home. I tried calling him on Monday morning - he said to call the call Centre. I’ve since called twice (the store does not have a direct line - you have to go via the call Centre) - I’ve been told they tried to contact me on the 28th - no missed calls, and now tomorrow is Sunday, 2 Jan and still waiting for a response and eta. I realise it’s this time of year but they were operational last week, and not being able to communicate with a store manager is highly frustrating! I I wish I’d gone with Takealot and paid the extra. Here’s hoping someone will read this and the washing machine will arrive sometime soon…