Poor service from Vodacom

I have swnt in a request to blacklist a lost device. I did not have a SIM card in the device, as it was link to another device with hotspot. Vodacom does not want to blacklost the device, as I cannot supply them with a cellphone number for the device. I did advise the consultants that there were not SIM card in the device, and no other network want to block the device as it is a Vodacom handset. Please see to the enquiry number and urgently assist. The mobile insurance company needs an ITC number in order to continie with my claim. RE: EC-1TOH-2HMBA1