So there you have it: VM do have the relevant data, but they're choosing not to give it to you.
Funnily enough the data regulator (the Information Commissioner's Office) clearly state that itemised call records are personal data here. And the same ICO confirm what we all know, that you have a right to see all data that relates to you. So I'd suggest you raise a Data Subject Access Request here, asking for ALL DATA VM HOLD ON YOU, INCLUDING ALL CALLS MADE FROM YOUR PHONE WHETHER ITEMISED OR NOT. If VM withhold details on non-itemised calls, then complain to the ICO, here.
There's a good chance you'll get a phone call from VM's data team asking why you want this data (because it's expensive and time consuming for VM to do a complete DSAR), if that call comes, you explain politely the scenario, and how you expect them to honour the request, otherwise it's the naughty chair over at the ICO. They'll fully understand that the ICO naughty chair is a very bad place for companies to find themselves, and may be keener to assist than the rest of VM's Aeroflot-inspired customer service.
