I usually insure our property whilst in Turkeythrough the HSBC but last year was unable to do so. I contacted intasure via this email address admin@intasure.com, it was more expensive than Turkish prices (as expected) but nonetheless an easy process, just a few emails later and my property and DASK was complete. There is a telephone number available if you google it.
Tried via the company next to McDonalds but they couldn't help without all sorts of reference numbers from my old policy which I didn't have, to be honest I didn't find them particularly helpful... but that's just my experience.
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