Terrible customer service!

Ordered and paid a deposit for a mattress from the Mattress People at the Home Makers Expo in Johannesburg on 1 March 2020 and was promised delivery on 21 March 2020 (which is equivalent to 15 working days). I called a week before the promised delivery date to find out if everything was on track and was told that delivery was still planned for 21 March 2020. On 21 March 2020, I did not receive the mattress and when I called the sales person told me that there was a delay in receiving the mattress on their side. The country was planned to go into a nation wide lock-down on 26 March 2020 and when this happened I was promised that the mattress would be delivered by the 25 March 2020 just before lock-down was implemented. Needless to say that I did not receive the mattress. After waiting 35 days through the lock-down when we moved into level 4, I was told that they were still not operating under level 4 and could not deliver. Mind you I had gotten my bed frame delivered from another company under level 4 so I was confused as to why they were not operating. On top of all of that every time I called to check on progress they would say they needed to check with the factory and get back to me but they never did and I had to keep calling and following up else I would not know what was going on. It is now the 2 June 2020, 3 months later and I still have not received my delivery. I was told this morning that it would be another 7-10 working days before we can even discuss delivery dates. Absolutely poor service! I understand that as a country we have been under pressure but this is unacceptable from a customer experience perspective. I would not recommend anyone purchase from the Mattress People as it is really just an admin intensive and frustrating process to get your goods! To the home makers expo committee, please ensure that you vet all the exhibitors at the expo! I was under the impression that I could trust the brands in that expo.