RBL Bank — unethical behavior by collection agents

Address:

Gautam Buddh Nagar, Uttar Pradesh, 201301

I am a RBL Card holder for the Card ending in 1354. In case the payment is delayed they start sending threatening messages. The bank has hired unprofessional collection agents who don't have anything to do with Indian Laws. The bank needs to check this before the matter will be out of control. The collection agents keep calling any time they want and if you don't answer a call then they will send messages on What's app or text