Return of equipment

I am still being chased by VM for the return of equipment that the technician has already collected from my property. Interestingly enough the hub was scanned in as returned but not the wifi pods nor the TV box. I received an email to say I will be charged £105 for not returning these. How is this possible? I still have at home the unused return kit VM sent me which I never had to use because the technician insisted he must collect the equipment himself. Somehow, VM received the wifi hub but nothing else. I didn’t return any of it using the kit. I handed them to the technician which means he has only scanned in the wifi hub but not not the pods or the tv box which is very dishonest.  I am now being told I have to pay £105 for something that has already been picked up by VM staff. It’s dishonest and unacceptable. I am extremely concerned and would appreciate an answer please before by bank account is being debited for something I have already returned. Thank you.