How to get a refund

How do we contact adobe support? To speak to an actual person about a refund? I signed up for the free trial and while I was in Mexico i decided to cancel it before getting charged. I had trouble with my wifi the entire trip and cancelled my trial but I don't think it went fully through. Also a credit card payment didn't go through while I thought it did because the internet was so bad. I got home and looked on my card and realized it didn't cancel and charged me but I do not wish to keep this service. I cancelled already and would just really appreciate a refund. I won't be using the app. Thank you in advance for your help