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Bit insulting don’t you think.Will Curry have anyone smarter
Another way to see which ones are DC is to look up a power adaptor and see which models it fits, for instance: https://www.amazon.co.uk/POWER-adap...90e9e&pd_rd_wg=8Utrb&pd_rd_i=B0794HMQJD&psc=1
I found the ease of speaking from their site, to a human being rather refreshing compared to the increasing use of robots favoured by banks.
If their technical knowledge is not up to your standards so be it, but their politeness could well make up for it.