Bad customer service still Rentoza

Rentoza has no customer service from the time I started my subscription till the end that’s why I will never go back to them. I recently saw a statement were they promised their customer service will definitely improve. I then reached out to get assistance to remove what they wrote that my phone is managed by rentoza and I am done paying them but still you get response after 5hrs and they still not resolving my issue can I please get assistance