Payment through the VodaPay app did not register

Vodacom again has no Customer Service!!!!!

I paid my account on the VodaPay app on the 2nd of May and it did not register on the App. It cleared of my bank account on the 4th of May. After numerous attempts for someone to assist, I now need to write a mail to *** which I did. In the meantime I get harassed a few times a day to pay my account. It took me 3 months previously to clear a mistake on the Vodacom side off my account. Who knows how long this one will take. It should be simple, pick up the payment and allocate it to my account?