PATHETIC CLIENT SERVICE!!!!!!!

On 29/05/2020 I purchased R150 electricity via the Nedbank website. The amount was deducted from my account but I never received my coupon via SMS even tho I waited until the next day. So I purchased another R150 the morning of the 30/05/2020 and I received that coupon. After numerous calls and reference numbers I was sent from post to ponder. A coupon was then sent to me on 2 occasions. The first occasion I was sent the same coupon which I received for the purchase of 30/05/2020...WHICH I ALREADY USED CLEVER PEOPLE!!!....made more phone calls, spoke to team leaders etc. I was sent another coupon but when I entered that one, which was accepted, there were no units loaded on there. I then logged a formal complaint on 17/06/2020 and someone called me back......and now everything is mum...My bladdy patience is running out..........THE MOST PATHETIC SERVICE I HAVE RECEIVED....A BUNCH OF USELESS PEOPLE WORKING THERE!!!!!!