The only advice that I can give comes from eBay themselves.
In cases where your items have not naturally disappeared you should again contacct support, explaing the problem and drawing attention to the timeline i.e. 4 months inactivity, and they will MANUALLY remove the listings.
Please use the following link which is free and a callback service, so no hanging around having been put on hold.
https://www.ebay.co.uk/help/eua?id=5275&mkevt=1&mkpid
Best results are probably obtained by calling just after 8 AM when you have the highest chance of being served by a Dublin based operative... should you get anyone else I advise simply saying "Sorry, wrong number" and hitting the "Have us call you" blue button again.