MR Delivery

I think someone inside is using my card number because, everytime, we ordered, there has also been another transaction from my card. I removed my card from their system and there was one transaction unauthorized and they probably realised I removed the card and the ***** stopped. I followed up and they promised to investigate. Now, they are no longer taking my calls and my e-mails are not answered. Can I please have their physical address to take the matter on a personal level?