How do you talk to your clients????

Good day

Please confirm to me how does your billing department send out outstanding amounts? I work across the board and now this morning I receive an email with an amount that is due to you company.......I double and tipple checked my mails........guess what NOT ONE STATEMENT?????? The first email ever to be sent by your company was a final demand?????

I contacted your accounts department, and informed them of this, whereby they stated, they dont care, they did send an sms, the more I tried to explain I work accross the boarder and no calls or sms was received the more they stated they dont care?

HOW PATHETIC IS THIS COMPANY AND UNPROFESSIONAL!!!!!!!!!!!!