Rbl — rbl credit card agents calls

Dear sir,

I am getting calls from different different operators of rbl bank on my personal mobile no 20-30 times a day however i always tell them that i will make the payment before my due date, i had very muchfrustrated about these credit cards calls from rbl bank or there vendors, so i am requesting you to kindly look into these and if these will not stopped same i will take action against them. They harrese and don't have atiquetes how to talk.
Please seek through it.