if you were not wanting telephony why ask for a DV adapter ? , if you did want telephony via BT ( after migration to DV ) the BT SH2 is a prerequisite, so if you never intended to use a SH2 , then telephony was a pointless item to take , it also follows that the DV adapter is only going to work with the SH2 , as it’s name implies, an adapter to make an ordinary phone work with DV.
How you arrived at this point is somewhat irrelevant, either you misunderstood what they said or they were not particularly clear about the need to use the BT SH2 to access DV , although the briefest visit to this forum would have answered that question.
AFAIK, you can removed DV from BT broadband once out of the telephone minimum term , given what you have already been told , perhaps you are within a minimum telephone term , you could always ask for a credit equal to the £3 ‘fee’ for telephony on a PAYG basis, they may consider that .
The alternative is to use the SH2 so that you do have access to DV ( and your DV adapter then has a use ) and use your preferred router in tandem with the SH2 , many customers seem to use the SH2 ( connected first ) simply to access DV including the DV adapter, and then have their own preferred router connected to the SH2 to handle all the other ‘router’ responsibilities, if your router can work as an access point , no issues , if it can’t be set as an AP , it still works but with a few minor inconveniences, so seems the logical thing to do .
