Cash advance

I am not happy with the service I received when on vodapay App with Masero, she ended up closing the chat without giving me the assistance I needed. I took cash advance with Vodacom which was fully settled via debit order, but the following day I noticed that the App still reflected an outstanding of R0.80 which did mot make sense, I settled it but again after settling it still reflected the R0,80 is outstanding I thought this will be updated maybe within 24hours 4 day later R0.80 has now added to R2,40 so everyday the R0,80 is added on the balance for some reason that even the agent could not respond. All I received was I should settled the R2,40 which I don't owe. Even after requesting the statement for the cash advance which could not be provided to me.