Hi.
If you have booked a holiday to any Haven site through the sun holidays you have been charged more than booking direct through Haven.
The Sun has a price guarantee where if you find the same holiday within 28 days they will refund the difference plus £10. Haven is currently having a half price sale till the end of the month meaning the holidays are cheaper direct through them.
If you email The Sun on www.ukholidaysinthesun.co.uk/contactus with the details they should credit your holiday booking account with the difference.
Hope this helps some of you.