Telkom : service & the way NOT to do it

Telkom need look no further as to why they aren't profitable. Their customer service, sales and general queries that need responses service is non-existent. I've been trying since the 1st week of January 2019 to sort out my TLLA handset. I've been to the store twice @ Eastgate Centre & was told by the manageress the store has zero stock & I must apply online. I've app**** online only to be called back & told to go the store. Seriously!!! I hve a look alike service already in place -I'm trying to get an upgraded handset as there's something wrong with A: my screen, it's scrambled and B: trying to find out why the Telkom wifi is so **********ly bad in Kensington ie Callers are inaudible on my end when I receive calls and/or dialing out is a disaster as it's very difficult to hear people or for them to hear me. Now what??? Who handles this???