Vodacom Failed to activate my cellphone insurance now they also failing to cover my claim

i have a vodacom contract i signed on the 4th of December 2019 when i took the contract i also accepted insurance for my device unfortunately my phone was ****** on the 6th of September 2020 when i claimed to my surprise was advised the insurance was never activated by the consultant whom assisted at Vodacom shop .The store manager does not want to take responsibility for the mistake they did on their side .Ntombikayise Tshabalala from eService team was assisting on this matter she came to a resolution that the insurance cant pay as they never received any insurance accepting forms from the store and the store can't prove that they have sent any application on the 4th of December 2019 . Sylivia Mabote store manager at Vodacom4u Eastgate also advised me she can't take responsibility for this as the consultant who sold me the device is no longer at her branch and she is denying not sending an application to the insurance . I'm being sent from pillar to post. I'm not getting any help .