The problem with a CHIRP is it is totally anonymous, yet this is very definitely a unit (person?) specific problem.
It's accepted that if this happens and you make a request to "pass it on over the landline" then these things happen and you do it. The chances are (though I don't know for definite) that Solent will have a direct line or at least speed dial to Shoreham.
Speaking as an ATCO sorry, but black mark against the person concerned.