Poor customer service on Defective product

I have had the most appalling service from the JD Group call centre ***, spoke to the following customer service agent Aldridge Petersen on the 26th Jan, Busiswe Sowazi who did not about my complaint that I filed. On the 29th of Jan i spoke to Donald regarding the defective product Tarryn work station and he informed with 24hrs my replacement item will be delivered to date nothing has been done. 3rd of Feb I followed on my complaint spoke to Sisfo and he said it with management and followed again on the 9th of Feb spoke Nompumelo she said it awaiting management approval and today I spoke to a Palesa who is absolutely rude and appalling she doesn't even give u a chance to speak the ref no I have that was given by Donald is incorrect so how is it my problem, this Palesa person should be fired as she has no listening skills and places my call on hold,THATS EXCELLENT CUSTOMER SERVICE FROM ROCHESTER . I want my complaint resolved before COB 24th Feb and new Tarryn work station delivered to me. ROCHESTER NEVER CALL CUSTOMERS TO KEEP THEM UPDATED ON COMPLAINTS,ABSOLUTELY TERRIBLE ONLINE SERVICE

Ref no. *** Delivery no. ***