Product: Checking or savings account

While Out of town I was using my Debt / Credit card from Capital One Bank. 
I made various charges as a credit card to the account.on XXXX Simultaneously an automated Debt Check hit my account in the amount of {$270.00}. This put my account into a low balance of {$130.00} On XX/XX/2018 a charges were put thru in the amount of XXXX on XX/XX/2018 {$8.00} XX/XX/2018 XXXX XXXX {$73.00} That caused a negative Balance of {$16.00} as a result caused a {$35.00} Overdraft Fee. Debt Card Charges on XX/XX/2018 {$23.00}, {$45.00}, I was then Charged {$70.00} Overdraft for {$68.00} in Card Charges. See attached XX/XX/2018 Statement. 

On XX/XX/2018 Card Purchases {$3.00}, {$13.00}, {$49.00}, {$56.00} and {$100.00} were processed and the account was charged {$170.00} in Overdraft fees for {$230.00} of charges. 
I was never alerted by Capital one as they allowed over 8 Charges since the negative Balance appeared. So from XX/XX/2018 to XX/XX/2018. So for over 8 days Capital one allowed me to run a negative Balance. Without any communication to me. 

I found out about this about this on XX/XX/2018 and called Capital one customer service and Spoke to a Representative that identified himself as XXXX. I explained to him that I had no idea of the negative balance and why did not Capital One at least notify me. I also notified him that I am a Merchant and accept Credit and debt cards and when I put thru a sale Especially on a debt card the sale would be rejected as should so the purchaser can know that their is no more money and use an alternative way of payment at point of sale. 
He apologized and said he could only credit my account 5 or 6 Overdraft fees but if I went into the branch they would credit my account for all the overdraft fees a total of 10 fees amounting to {$350.00} On XX/XX/2018 I went into my nearest Capital One Branch in Naunet I spoke to XXXXXXXX XXXX XXXXXXXX the Branch Manager. I explained what XXXX said. She told me that was not true. She then went on to say there was no XXXX at customer service that I called the Night Before. She said as a courtesy she could only credit me two overdraft fees a total of {$70.00}.. I explained to her that Capital One allowed me to run a negative balance for 10 days and that this pattern is predatory. She said sorry that is the best she can do. I said Fine give me the balance due and close all of my accounts and I Gave her XXXX to XXXX out my account and I handed her my debt card and told her to destroy it. She said that should do it. 
Recently I Received a letter from Capital One stating that their was more charges to my account and more overdraft fees. Capital one Cleared Charges on XX/XX/2018 for XXXX cents and {$19.00} and Charged me {$70.00} in overdraft fees. then on XX/XX/2018 in the amount of {$17.00} with an Overdraft fee charge of {$35.00} and a maintenance fee of {$15.00}. another {$120.00} in Fees and they refuse to close my account. 
So if you add it up Capital one charged my account a total of {$470.00} for {$280.00} in Charges that should have never been processed. 
This is a predatory practice to say the least. This should be investigated not Just for me but also for countless other Customers they have done this to.