Vodacom does not care

Please be warned when entering into mobile phone contracts. My Dad passed away in April 2017. 4 months prior to that he subsequently upgraded his contract. I have tried from Sep 2017 to date to get a signed contract or a recording or proof that he was explained the difference between contract and handset insurance or where he waived it. Emailed from legal to admin to customer care. No sympathy and no empathy or info received. We are now forced to pay a claim of over R30 000. Tried to negotiated as 20 months of benefits not getting but must be paid. Shocking!!!! Vodacom has lost me and my family as clients for ever.