HDFC Bank — Harassment from the bank persons

Basically I'm an HDFC BankCredit Card customer from last 4-5 years,
I'm payingmy payment regurlary. But from few months I'm runing out of fund due to some business crises
So that I'm unable to pay the payment to them. Today I received call from bank person he said
pay ur due as soon as possible but I said I've no funds available and none of my client can give me payment at this time then the bank person abused me badly and say some bad words.
I requested him Plz try to understand my situation Either u give me some 2 3 months time
So than I can arrange the funds.
But he never listened me.
So now pls help me what should I do now?
waiting for ur response