debited for morethan 5 years for someone whose not alive anymore

We have been with clientele for almost 20 years now,and my husband's uncle passed away and when we claimed they didn't give us the 200 airtime and grocery was not given.we have emailed snd called with no response.

10 years ago another uncle passed away before 6 months waiting period, we have requested to replace him but they refused to help because we dont have the deceased paper work due to family issues, so for morethan 5 years we have been debited money of a person who has passed on we even asked if we could replace him with my last born son, they refusing to help. All they do is take money but they dont help us. All i can say is they **** people with no service delivery