Francis Nathar & CO. review: Account

Our account number is [protected].
We received your invoice No.[protected] which state that the amount due
is RM22.25 and the due date is 31-10-2020.

This morning when we called the pick hotline to collect a letter the officer in charge said our account is blacklisted.

We are very very disappointed.

Can you please let us know why?
And when we called the accounts department the office could not give us an answer.