I can't uninstall chatterbot?

[Larz60+]

If you have more than one version of python loaded, you may have installed to a version that you are not using, gontajones was trying to point out that the -V option will show which versions are being used.
try:

python -V
pip3 -V
python3 -V

the python that matches pip3 is the one with Chatterbot installed.