Citibank Credit Card Complaint

Citibank Credit card department,

Other fee Florida

Citicard has made countless errors with my account in the past year. They have double billed me, failed to get back to me when they promise to respond within 24 hours, they switched my account without asking me, they sent my cards in the wrong name and to the wrong addresses. They always have excuses but to this day, they have not corrected errors on my bill. I asked them to waive the $85.00 annual fee, and they are very nasty about it, threatening me, instead of waiving it after all of the fines and fees they have cost me with their errors and incompetence. Please help.