Store refusing to exchange scratched & chipped table

I bought a glass table, they delivered it, assembled it, however after they left as I was wiping the dust from the table I realized that the glass has lots of scratches and a chip on the side. I immediately tried to call the number I had and the voice-mail was saying send a whatsapp with the invoice and table pictures, of which I did. The there was no response. The following day I called the number again then no answer again. Then I decided to go to the outlet at Mall@reds where I bought it, then they said the number I used was no longer in use as they stole this guy "Chris's" cellphone and they gave me his new number. I immediately forwarded the same message to him using the new number as they said he does not work on Wednesdays and he will respond to me on Thursday.

My message was blue ticked, then only on Friday after I followed up he said he is waiting fir a response from the warehouse, now today on Sunday he responds to say they can't exchange the table because HD got the message 2 days after delivery, however he knows that he changed his number and I got it 2 days after delivery.

Bad service.