unfair business practice

i have an african bank credit card and i have been paying my account consectively until i had a family bearevement, where i missed to payments but continued paying, i called the call centre and i told them in january i will settle all the arrears in the account. i did so with the intsruction that once my account account is updated i will be able to use the card. now my i'm told my card is blocked and i cannot use my card as its blocked and i'm stranded with no funds. now i'm stranded funds and bieng misleaded in to paying all the available funds into updating my account. i need my account unblocked and allowed to use the account .