Not keeping proof of payment up to date!!

I made a payment on the 23/11/2015 for the month of November 2015 - Sunday Morning 29/11/2015 I wanted to recharge my cell phone the message that was sent to my via sms \PAV200: no funds for airtime are available to you at present. Please make an account payment or try again on the 8th. Helpdesk ***. Miladys"NOW when will you go through your statements to see that I did pay R450 - And helpdesk is closed on a Sunday and I need to use my phone like in today (Sunday) I am on pre paid. I keep my payments up to date and its my account that i can use for pre paid I have the option on my account to do so!<br> I kept the sms as proof"""