DSTV - incorrect billing continues & poor customer service on website chat

In March, after realising i was being billed incorrectly, I contacted DSTV and informed them of the incorrect billing (as a Premium customer, i was being billed for Showmax, which was supposedly free).

DSTV would not refund the incorrect billing which had taken place, therefore i downgraded to Compact plus - which should have been R579 (Subscription fee) + R115 (Explora features) i.e. a total of R694.

In April I was billed R908 - an overcharge of R214. In May i was again billed R908 - again an overcharge of R214.

I contacted DSTV on the website chat facility on the 3rd of May - my account was still a mess, being billed incorrectly, including again for showmax, which had been cancelled in March, amongst other items.

I asked for a refund as i had been overcharged, to the tune of R428 (the total of overcharge for April and May). Despite three (3) interactions on the website chat, i am still no closer to a refund for the overcharge - two of the staff were rude and simply closed the chat before the issue has been resolved.

Poor customer service, incorrect billing - it just gets worse. Why is it so difficult to get this right?

All i want is my refund for the overcharge - DSTV messed up the billing, just admit the mistake, fix it and refund me. Oh and its really bad service when your staff simply close the chats without resolving the issue.

Maybe you should offer a discount to customers who actually try to engage with your service agents?