Their whatsapp number seems legit but I got am automated message from the business whatsapp. Google maps street image shows no digiwiz anywhere and neither do the signs.... hmmmWell, their address is listed as 277 Main Road Bryanston, Gauteng, South Africa
Which is Cramerview Village Centre, whos number is 072 412 1953.
Call them and find out they are really a on premises.
That said, their whois lists the website creation date as in Nov 2019.