Capital One Credit Card Complaint

Capital One Credit card department,

Credit line increase/decrease New Jersey

I would like a credit line decrease on my CapitalOne card. I want to apply for a new card from another providers and eventually cancel the CapitalOne card. I want to reduce my revolving credit to get the best rates from the new company. I requested a credit line decrease from CapitalOne which they denied and will not tell me why. I asked to speak to a supervisor, and was told that no person can override the computer determination that I am not entitled to a credit DECREASE. I do n't why it is even lawful for a credit card company to decline to DECREASE consumer credit.