Nedbank took my money and did not give me airtime.

I purchased airtime 3 times through the Nedbank app on my phone. In tikes past it worked flawlessly. Two attempts were for Cell C data bundles and one for Telkom totalling R188. None of the purchases went through to provide me the data airtime but my acxoubt was charged in all 3 instances. I quieried twice for the Cell C purchases on 4th and 9th October, 2019 after the attempted purchases on 4 October, 2019. To date nothing has been done. I am still out my money, though I asked for a refund, because I no longer need the airtime. I contacted Nedbank on 25 September, 2019 for the failed Telkom purxhase on 17 Sept., 2019 and they blamed Telkom. When I asked again about the 17 September purchase of Telkom when I was querying about the later attemlted Cell C purchases they could not tell me anything. I phined agaij today and was on hold for a long tike without anyone picking up. I no longer recommend using Nedbank for anything, especially prepaid purchases from their banking app. I used my Old Mutual/Bidvest account to buy airtime and it worked perfectly. I don't recommend Nedbank any longer.