Poor customer service

I have been having horrible experience with DStv, to an extent of thinking about taking legal action for poor customer service and negligence regarding the financial impact of their conduct.

Eversince I got the WiFi router, it's one problem after another. Problem1......my data was reloaded a week ago but today it says depleted. Problem 2.....all the avenues you get redirected to are useless (WhatsApp and self service). Problem 3......was given R500,00 voucher to use at pep but when I was at the shop it wasn't working..... imagine the embarassment I endured. I had to pay cash for the goods I intended to use voucher for. Problem 4...... I tried to directly call them but the lady who was assisting me kept me holding the call for 20mins and eventually the call was cut off because their call centre is landline and I was using my cell phone.