Thanks for getting back to us.
Unfortunately, there are no cases showing in the account from any recent attempt - so we'd like to try some testing in the account to see if we can determine what might be occurring for you with the support case system as it appears to be operating normally otherwise. Please let me know if it would be alright for us to do some testing in your account with the support case system so we can get to the bottom of the issue.
As for the API error that shows in this account, it indicates that the images associated with the listings that have been attempted are using images that are too small for eBay's current standards and the images would either need to be resized so that the long side is at least 500 pixels - which you can do from the image management page of your account or you could upload larger images for use in those listings.
Regarding telephone support, the wait time varies on the load of callers we have at any given time, but you can always leave us a voice message and our support team will call you back as soon as they are able. You can opt for Live Support Ala Carte, which can be added to plans that do not include Live Support for $5.95 per month, and can be turned off again should you wish.
If you have no objections to us doing some testing directly in your account related to the support case system, please reply here and please also let us know what browser and operating system you currently use and we'll take a look into that. Once we have that resolved, you can file a case about the billing issue you refer to or if the difficulty persists with support cases, we'll work out another way to communicate about that.