Hi-Fi Corporation does not answer when trying to phone them

I have recently ordered a TV online from Hi-Fi Corporation. After opening the box I discovered that the TV screen was cracked. Hi-Fi Corporation says one should notify them on ***within 24 hours if goods received was damaged.

This is impossible to do as nobody answers the phone. In desperation I even tried to phone their Fourways store on *** to enquire why nobody answers on ***. Unfortunately the Fourways store also did not answer their phone.

This is pathetic. Please phone me Hi-Fi Corporation