EXTREMELY BAD SERVICE!!!!

I bought R30 worth of airtime on 24 August 2025 and it was not credited. I called the call centre to complain about it and was requested I send them proof of payment of which I sent a screenshot of my bank account transactions. They insist I must send them a full bank statement not a screenshot, but I do not see a reason why I should be sending a whole copy of my statement. My bank statement is very personal, and I think if I was opening a new account then the whole bank statement request will be understandable, not in this instance. I just want Telkom to know that I will not be renewing my contract when it comes to an end, I will go to a service provider that does not enrich itself with customer's thirty Rands (R30)