Since all your feedback so far is negative, I wouldn't bother.
Just abandon the poisoned account and start again with a new one.
You will need a different credit card number for the new account, but you can use the same Paypal account.
It would also be a good idea to read the eBay Terms of Service and the Selling information to avoid future problems.
Putting the wrong size in the Description is not a minor error.
And there is no need to nag a customer for payment. Just file an Unpaid Item Dispute in the Resolution Centre at the bottom of this page.
If you have questions about Selling, start a new thread, or review the many posts about Selling problems.