Lack of response from Discovery

<p>So we have been trying to close our discovery credit card since 23 December 2016. We have sent the appropriate form on the 23rd and another 2 times since. Every time you get a different person saying they haven't received the closure form and a new. Reference number but no closer to getting the account closed and your money paid into your own bank account. We are in the USA with a 9 hour time difference which really complicates it.</p>