Vodacom terrible insurance

I bought an S8 from the Richard's Bay branch after my father-in-law claimed from insurance for his phone. I paid the excess and kept the phone. My S8 broke 2 months ago and I am still paying insurance. Now Vodacom is arguing with me saying that the phone was on my father-in-laws name and refuse to honour the insurance claim. I have fought for 2 months and they messed up on their systems and now I have no phone Terrible service