Capital One Interest Charges

Why you SHOULD NOT get Capital One Credit Card?
and
CHECK YOUR CAPITAL ONE INTEREST CHARGES!

I know there are a lot of numbers, if you don't want to know he details, only read the last 3 paragraphs.

I have credit cards from different banks and I NEVER EVER carry a balance. October 2017 I noticed a very small charge on my capital one card as an interest! I was shocked and although it was too little but I called them and they said that was a mistake and they credit it back to my account.

April 2nd, 2018, I noticed there is a $43 charge as an interest on my account again!! I looked at my statements and transactions and since THERE IS NO "Remaining statement Balance" number on their app, I realized I didn't pay my Feb statement in full. 

My Feb statement balance was $1,129 and I paid $886 of it BEFORE the due date. So the remaining $243 was carried over to March statement.

March statement balance was $3,125 and the due date was April 5th.

As I said, I noticed the interest on Apr 2nd, so I paid the whole March statement balance of $3,125 on the same day which is THREE DAYS BEFORE THE DUE DATE.

Then AGAIN, they charged me another $53 on Apr 7th!!! This is unbelievable, I HAD NO BALANCE DUE but they charged me!!!

I called them, when I told the first person I'm a financial professional, she HUNG UP on me! 

I called again and asked for a supervisor, he transferred me to Kristine, the supervisor. I told her I've been in accounting and finance for more than a decade, so you don't need to play with words for me. This is how you should calculate the interest, but obviously Capital One doesn't. She said "I totally understand what you are saying but this is a valid charge"! 

I said, I had ZERO BALANCE DUE and you charged me interest, how is this even possible?! again she just said the same sentence!

I said, I've been your customer for 5 years and never had a late payment and I am the same with all my other cards and I have the same pattern of payment with all of them, how is it possible to get charge now for about $100!!!!!

You guys, I'm not writing this to get my money back, I'm writing to those of you who get charged for the interest and they never even tell you why you are paying so much!

Basically, Capital One charges you interest EVEN IF YOU PAY BEFORE THE DUE DATE. and if you are wondering how come this didn't happen before? I think this method TRIGGERS as soon as you don't pay your full balance ONCE.  

I already prepared a detail excel sheet and I'm ready to help you or loved ones to get their money back, so please help me spread the word, because TOGETHER we are STRONGER than these institutes. 

to Capital One: this is really unfair and it's definitely a very bad business practice.