[Resolved]  ICICI Gold Credit Card — extortion calls and mental harrasment

I hold a gold credit card with a limit of 81000/-. ICICI bank suddenly increased the limit to 300000/- without my consent and fradulent trasaction happened on my card...I had been complaining about this issue since quite some time.Instead of resolving the issue collection manager Nisha, Danish kumar and Akash gaikwad(hope those were their original names) from JB nagar branch mumbai have been making nasty threatening calls to ma and using abusive language.They had 2 men follow me everywhere. As i am a female and i travel alone, I have lodged NC no-317/09 at samata nager police station.inspecter Shinde advised me to get them to the police station if i feel someone is following me.Besides doing this Nisha calls me from[protected] and talks nasty things and abuses me. Please advise.