We had this problems a lot. You have to make it painful enough that scammers do not want to bother. Put Cloudflare in front of your IP. Everytime someone abuses you then block their IP at CF. If you can automate this even better. Reduce the service for a free trial in someway that hurts hackers but not real customers. You will have to think about this it might tricky or not possible. Add software to your stack to wat…
Once you have your CC subscribers really work on retaining them and reducing churn, if they try to cancel show then messaging that reminds them of the value of the service or offer them a discount, as examples.