I really don’t know what to tell you, I do know that Bill P posted a picture of him stabbing one of the wasp like critters on the vegetable forum at another site last year.
By the time I knew I had them it was too late, as is the case most of the time.
Look vine borers on the web or in a book they should tell you what to do to prevent them.
That is IF it’s what you have in the UK.
Sorry, not at home now to look in my organic pest control book, and wont be for 2 weeks.
Best of luck Worth