Amazon India — debit on my debit card

Address:

Where are you even located

I checked my bank statement and on january 24, 2020 found a debit of $18.39. I did not authorize this and don't even have a clue what it is for! I want it credited back to my account of which you should know as you debited it!!! I am a new widow woman on a very limited budget. Do you play on people such as me? You ought to be ashamed of yourselves! And this better not happen again or i will turn over to bbb