I lost my Galaxy Tab in April, my Google Play Store Account registered the device as being active on the Cell C Network on exactly 1 May, is there anyway that we and check who registered this device with Cell C ?

Is it possible they took out a contact with Cell C and surely they had to RICA ?

I bought the device cash and didn't blacklist it yet in the hope that we might still find it ? I think I know who it is just need confirmation if it's someone unknown then it's cool.