Can't pay account with no payment details?

One star is waaaaaaay too much. I got a missed call, phone did not ring. Got this attitude from the woman helping like she was not listening to what i am saying. According to her emails and sms's had been sent but i searched and found nothing. I asked can she please whatsapp me the details and still received nothing! How can i make any payments without having banking details to make them to. I explained my email inbox is full but that just went over her head completely! This is shocking! Where the heck does she expect me to make payments to if she wont send me the banking imformation on the one channel i expressed i will definately get it??????