cancel and receive a refund

Hello.

Fellow user here :-)

Cancel what?

An IMDb user account is Free, an IMDbPro Basic is Free,

IMDbPro Premium cost money if you have it over one month.

https://help.imdb.com/article/imdb/general-information/what-s-the-difference-between-an-imdb-page-and-user-profile/GHQEDYZ5DJ5Y8G5S?ref_=helpsrall_imdb_1#

If it is IMDbPro Premium use this to contact the right department:

https://help.imdb.com/article/imdbpro/your-account/i-didn-t-sign-up-for-imdbpro-why-was-i-charged/GME9FNFCT7BS6H45?ref_=helpart_nav_23#

and this to cancel:

https://help.imdb.com/article/imdbpro/your-account/how-do-i-cancel-my-imdbpro-membership/GBCYHYSYPBFUW5ME?ref_=helpart_nav_6#