Payment query

Since i engaged with Woolworth I had never skip not even single month without paying my account on time. On the 29th of May 2020 I payed my account via EFT as usually.One week later I received my financial statement stating my account is in arrears. I tried engaging WFS via telephonic but in vain. I email my query making them aware of my problem but even today I find no Joy.I send them proof of payment(statement of account) and still they haven't get back to me.

Can you please Woolworth do an audit on my account I don't owe you I paid double instalment on 29 May how come my account is in arrears. I have proof of payment.

My identity number is *** and my card number is ***36 7469

Pleeeeeeeeeeeeaaaaaaaaaaase............