Product: Credit card or prepaid card

I applied for a credit card with Chase on  XX/XX/XXXX . I was immediately approved for a {$22000.00} credit limit. I received the card a week later (  XX/XX/XXXX  ) and started spending on the card. I spent {$3100.00} in one week. I had some large purchases for my new home that I was waiting to put on my new card in order to meet the minimum spend on the card to receive some airline miles as a bonus. My account was closed on  XX/XX/XXXX , two weeks after being approved.
 XXXX 
When I called in to Chase ( the number on the back of my card ), the phone rep said they could not give me any details as to why my account was closed. I got in contact with the Chase Executive Offices and asked to be contacted about my card closure. The woman on the phone from Chase Executive Offices said that I would be receiving a letter in the mail but she saw on her end that it was " our affiliate is ending its banking relationship with me. '' I asked what that meant and she said if I have had any bank accounts, investment accounts, mortgages, etc. closed by Chase in the past that would be why. I have never had any type of bank account with chase before other than a checking account ( which I closed myself ). I received a voicemail a few days later explaining the exact same thing. She said she has no further information. She left her contact info, but I have never been able to get someone who can answer my questions. I seem to have hit a dead end.
 XXXX 
I am worried about this explanation that my card was closed due to " a past investment account closure. '' I am worried there is incorrect information tied to me and my profile at Chase. The only situation I have had in the past was 3 years ago (  XX/XX/XXXX  ) ; my husband had his credit card ( not any sort of bank account ) with Chase closed. He was never given a reason, but it was after he applied for  XXXX  cards within a month of each other ( so I am assuming he was deemed risky because of this? ). After his card was closed, so was mine. After they closed my credit card, I closed my checking account. They did not close my checking, I did. I have never had a late payment or had a defaulted account with Chase ( or any other bank for that matter ). If my account was closed on  XX/XX/XXXX  because I have had a card closed in the past ( really because my husband did ), why is that not the reason given to the letter I received in the mail? And why was I approved with a {$22000.00} credit limit on  XX/XX/XXXX ? I feel tricked into putting spend on a credit card that I was promised to earn rewards on, only to have the account closed and earn  XXXX  rewards. I would have put my large purchases on another card. If I have some sort of negative associated with me, why can I not get any answer to what that is?
 XXXX 
I want to build a positive banking relationship with Chase and I thought ( on  XX/XX/XXXX  ) that I was going to be able to. Unfortunately, I can not seem to get a hold of anyone to hear my case. I have a high credit score, have   XXXX   incomes between my husband and myself, and have savings. We are not a high credit risk. I want to build my credit relationship with Chase. If my husband got his card closed, why am I having trouble? Are we not two separate customers?