Indigo Airlines — privacy breach

Hi,
I took an indigo flight from nagpur to delhi on oct 15, i was on a company tour (Bold north america, san francisco) for a week and decided to visit my family for the weekend in nagpur. Booking reference - ghplvx. Indigo wanted to get my credit card information (For luggage charge) after i land​ed​ in delhi. Since i was on board they could not reach me and they decided to dig into their database and find a match for the last name. Indigo reached out to one of my family members to talk about this without my consent. This is an intrusion of privacy, i have reached out indigo a number of times, however, they are not taking any action. Additionally, the indigo staff held my luggage in delhi and did not allow me to go until they had my credit card information again. This is not acceptable and i request you to please look into this.