Poor customer service and *****s from the poor

I have had the worse experience with Telkom mobile. Firstly I am partially sighted, besides that I am capable of doing my own transactions. I was buying airtime with my phone use ABSA online. I accidentally selected R1000 instead of R100. I also dont know how it happened. Immediately I noticed I accidentally bought airtime worth a R1000 I call and asked Telkom to reverse the transaction. I was told someone would get back to me within 72 hours, all my details were taken. No-one got back to me after 72 hours, I followed up and until today which is 6 weeks later I still e-mail Telkom mobile daily enquiring about my refund as I informed them I was leaving SA in 3 days and would not need the airtime anyway. So until now no-one gives me clarity. An error is an error and when a client request a transaction reversal or a refund they should get it. That R900 is my that I could buy groceries worth and not airtime.