Delivered someone’s car disc to me (I’ve never arranged with them)

I received someone else’s car disc renewal which I never app**** for in the first place. The most worrying thing is that you guys have my full workplace details (address) and cell number which I never shared with you. How did you get them? Now, the frustrating part is that your contact number does not go through, it goes straight to voicemail for reception option and completely cuts off for other options. It will help if you can call me and arrange to collect the poor woman’s disc.