Watch out for auto subscriptions

There is an automated deduction of R50 for Uber eats (totals R600 pa) for Eats - quite funny I use Uber for travel only, however they auto subscribe me into their service after offering R100 on the app. Since I eat fast food perhaps once a year, and I get it myself, how do they justify this. Then there is their website - no client service, loops you around and around - I am deleting the app, and changing my credit card.