RBL Bank — RBL bank threatening with physical consequences

I have rbl cc card this was the biggest mistake I made I had been making payments every month except the month of October due the staff behaviour on the call by November the moved to the SSS collection agency The collection agency started calling me twenty to twenty five times a day thinking it will amuse my I spoke to them couple of time it led to an argument I stopped taking their call I continued making my payments regardless wht they did because I didnt attend call they called my spouse saying obscenity to her this really irated me I spoke to the agent and had a argument They called after dat even with the rudest and lewest language stating they will send ppl to my house cause me and my family members personal harm and injury I want to know is the behavior appropriate for the bank I was told by the bank they will be revoking my account from the SSS collection agency They lied I made payment in December and again in January the collection agency started calling again I never faced this issue with other bank cc cards when the associate came to me said they are with bandhan bank later I came to know they are not I want to know is such behaviour appropriate for the RBL bank SSS agency If this is how we gonna proceed in received your payments .