Legal ****?

I thought this company was an online ****, but they are a real company, just very very *********. Handed over for debt collection on a Drs bill (Nay and Piccolo) that was never sent to me (error in email address from accounts side). Having requested the bill from the Drs I can see that Van Rhyns are charging close to double the bill without acknowledgement or statement of added fees (although I have repeatedly asked for a statement). They just keep urging me to pay without a statement. After I gave them correct details, they have repeatedly called my emergency medical contact (although I have repeatedly stated that I do not consent to the number being used in this way and asked them not to do this). Whatsapp contact at Van Rhyn (I've been contact by 3 of their people none of whom seem to be communicating with each other) noted they could offer an (unspecified) discount on fees by Whatsapp, then sent me an email with the full (inflated) amount on it, still no statement. When I queried they said that they "can send it formally via email if this suits you well." I cannot believe an attorneys can operate like this.