ICICI Bank — i accidentally withdrew 500 rs cash using my credit card instead debit card

Address:	Gurgaon, Haryana, 122002
Website:	icicibank.com

Hi, on 24th jan around 5am i had to withdrawal 500rs. I accidentally used my credit card which looks same to my debit card and i have same pin for both.
I called icici for the same. First guy said he's from different dpt and hung up on me, second executive reset my call and which brought me to initial menu, third guy did not know much about and hung up one me forth lady (Shreedevi) argued, she was belligerent and hung on me. I have 5lac personal loan on my cc and according to the icici i have to settle down my all dues otherwise i would have to pay interest for next 5 years. How would i settle my personal loan? Icici customer service so far is horrible