basically they dont understan the word reccuring

I have a contract with them and they introduced me with the option to pay R49 a month for unlimited telkom mobile to telkom mobile calls so I chose to that it be a reccuring thing and I get a 100 minutes for all networks the reccuring R49 didnt go off this month without me realizing it and I used my minutes instead of the unlimited minutes when I phoned customer service they didnt even try to resolve the issue they just sid theres nothing thwy can