Eldest DC11 just been in touch to say his 'D'F has confessed to being privy to all WhatsApp conversations on his phone - between me and DC, my OH and DC, DGrandparents / family, friends, our own "family chat". Asked DC to check linked devices - there are none. Seems like XH has maybe cloned their phones? I bought the handsets, contracts are in my name. DC have never voluntarily given their DF permission to trawl through their messages (inane banter from the entire class of Year 6 is pretty dire in any case... but DC know I do it).
Certainly makes sense now for DC11: he felt like he was going through an inverted gaslighting experience as 'D'F would bring up subjects which DC and I had discussed just a couple of hours earlier on WhatsApp... DC has had a lot of therapy following historic (and ongoing) emotional abuse from 'D'F.
AIBU to think this really isn't appropriate? I've contacted network provider and they've said they can provide new sims but that this can and probably will happen again. What can I do?!