Complaint Review: Amazon Seller Central

I am finding Amazon's Seller Central to be withholding payments due me for at least an extra week, with false claims that my credit card info is inaccurate. That not only deprives me of the money I'm due (over $300 last week), but it freezes my account. I know my information is totally accurate, so I have to go in and add the exact same details as 'new' info and that re-activates my account - but I'm still out last week's payment. There is no way to contact them by phone and I have to go through a lengthy and time-consuming email system, only to receive a generic reply that does not answer any of my concerns.