I'm 72 living VERY frugally on SS. I was using the free version of Duolingo for Spanish. There was an offer for a 14-day free trial with examples of the monthly cost of PREMIUM Duolingo. An individual membership being $79.99 per/yr or $6.66 per/mo. Ok, I can afford $6.66 a month you get quite a bit more with Premium. I was notified of my free trial coming to an end, after that I'd be billed the Premium rate. HOWEVER, I was billed $79.99 THE YEARLY charge! Tried to cancel .. 2/26/2023!OH NO WAY!