I opened an account at XXXX XXXX XXXX as a supplementary account to my main bank account. I funded it the account with just a XXXX dollars. I also attached XXXX to my XXXX account. 

I made a purchase on XXXX that was supposed to be charged to my credit card, but XXXX wrongly charged my bank account instead, causing an overdraft. Even though XXXX swiftly corrected the error and refunded the money, XXXX charged me an overdraft fee. I tried to explain to them that this was the result of a billing error but they would n't hear it. 

Ultimately, XXXX kept the overdraft fees and opened a collection account based solely on the fees.