Trial but not free - can't cancel!

I tried out different Adobe programs for 7 days and I was not able to cancel them (not even before they actually sent me a bill for it). I can't do anything or change anything until I have paid for service but I don't have physically money to pay for it. I can't contact anyone from Adobe to cancel it or change it. They make me pay 50 euros to even have a possibility to change anything. I simply don't have money to pay for it. How is this free trial if they force you to pay for it still. Every other app or company I have used trial with, always have a possibility to cancel the service during the trial period and not take any money off or require you to pay for service what you may get refund for. Isn't that against every user experience law or is it me? such behaviour seriously made me think never to use any Adobe service, if that's how they treat their customers. Even spotify isn't that confusing and evil.

Does anyone know how can I stop it? Do I need to find money to pay for these services and then cancel the plan and make them pay me back or what?

Thanks ahead!