Reply? What reply? Investigation?

I posted the review below. They responded to say it was under investigation and they would get back to me. Vodacom even gave a reference number. Two weeks later i have not been contacted and my latest statement received yesterday still shows over R9000 to be paid end Feb. I am worried sick but they don't seem to care. How will i fund my family if they bully me on this? "I checked my bill on the "my Vodacom" app a week ago and it said R1550. Yesterday i checked again only to find it is now R8831 due to a so called out of bundle data bill of R6825. I did not receive an sms as i had on prior occasions to warn me that my data was running out but now i am due to pay this on debit order tomorrow. I strongly believe that Vodacom is acting in bad faith here. I am tempted to call this ********."