Van Rhyns doesn't acknowledge payment and did ITC listing

At some point an odd medical account of my mom in her 80s got handed over to Van Rhyns. When I found out I paid it on her behalf 30 June, the exact amount. Van Rhyns kept on calling thereafter and I kept on telling them it was already paid. On 7 July the person calling asked to send a Proof of Payment, which I did the same day from the bank directly. However they kept on calling daily claiming it was not paid. The default email address is to "Louis". So I emailed him and asked him whether het got the POP.

No reply.

They kept on calling every day and then I got a notice that there is now an ITC entry against her. So, being gatvol I sent Louis another e-mail yesterday, another copy of the POP and stating just one more call and I start complaining on the internet.

I got another email today about the ITC listing being done against her and got another call in why haven't I paid yet. So here we are.

I sent a proper **** out email to the marketing email address on their website. Louis is the attorney the guy said over the phone. Shame on Louis, who doesn't check the bank statements, doesn't reply to emails, doesn't talk to the admin people and doesn't know what is going on in the practice.

What a horrible company to deal with.