Billing Nightmare

Since the 28th of February 2019, I have been contacting your call centre, as I was overcharged on my bill. For over a month now, no one has looked into correcting and crediting my account accordingly. No one has bothered contacting me, even though I was advised that the matter had been escalated and as a matter of urgency, I would be contacted with regards. I've had to spend my own time and at my own expense, I've had to endure calling your company over and over, to NO avail! With that being said, each time I contacted your call centre, I came to find that instead of my case being looked into, for some reason things were getting worse and that the inaccuracies of your system just kept getting more misleading. This morning, the 2nd of April 2019, I went onto your website to check if my balance had changed and yes it has. I am now being presented with an amount of R1544.22 which I am subjected to pay on the 5th of April 2019, via debit order. I went onto the app as well to confirm. On inspection of the supposed transactions which make up this bogus amount, once again, nothing adds up. One more thing I must mention, over this entire period, I have sought to obtain a statement from you guys too. Your app and website has a statement which I downloaded, but the transactional info on there are also not correct and don't even correspond to the transactions on your website or app. I am writing this message to you in finality. I have done my utmost to communicate with your "support staff", via telephone and facebook inbox. You have definitely infringed on my peace of mind and that's one thing I will not stand for, especially when I am a loyal paying customer.