Wen by Chaz Dean Continued to send product and bill me after my credit card expired Internet

Wen by Chaz Dean sells hair care products including shampoos and conditioners. I signed on for an auto-renew subscription service with my credit card. After several purchases, I decided that I did not like the product and wanted to stop buying it. Wen makes it very hard to cancel. I contacted their billing firm about cancellation, but they continued to send packages even after the card I had on file expired. 

Then they sent late due notices for these items and are now threatening collections. I'll pay the bill and send another request to cancel along with the bill, but if this continues, I will pay a lawyer to write a cease and desist letter. 

Do not subscribe to auto ship with this company- or any company, for that matter. I knew better and shouldn't have. The products aren't very good, either, but that's a story for another day.