Don’t use the Vodapay app to make payment

I made my monthly payment over this Vodapay app did it every month but for the month of April when I made payment no money reflected on my account I went to my bank and my bank confirm with my bank statement that the money was taken out of my account. Since the 4th of May I have been struggling with Vodapay and Vodacom to sort this out but nothing I am sent from pillar to post I am so frustrated is there nobody from Vodacom that can please sort this out in the mean time I am threatened that my lines will be closed yet I made payment