Reserve Bank Of India [RBI] — please confirm about what is this a scam or not and should I go ahead with the procedure or not?

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Dear sir/madam,
I am Dilip Shukla and i received a mail from CHEVROLET AUTOMOBILES, UK which stated that i have been chosen in some lucky draw where i am winning some amount of money and a car. So further as i was reading the mail they wanted me to share some of my personal details which i did gave it to them. So then maybe two days later i received another mail from Miss Deepana Singh a senior security officer at Indira Gandhi international airport new udaan bhawan opp terminal 3 in which she stated to pay some amount of money to a SBI account number so that the customs can clear the parcel. So after few days when i had arranged the money she asked for. Then later i got to Delhi and called Deepana Singh to arrange a meeting with her so that i can get more information about the mail I was sent and also about the procedure. But unfortunately the meeting was not possible as she said she was buzy.But she mentioned to transfer the money earlier on the call and even sent me account details of someone where I had to transfer the money but later when I was in Delhi and called her she told that she couldn’t meet and also I asked her how much and where I had to send the money. Then this time she gave me a different account number which sounded weird to me and told to transfer the money which I did. A amount of 10K i transferred to that account. So after this the next day she called me and again told me to transfer more amount of money about to be approx. 50k and also I received a mail from RBI saying the same thing saying pay 50k for account upgrade for which I denied because I am not sure about the scheme.So my complain is whether this thing they are asking me to invest in is it something real or fake. Because a lot of events above has given me negative vibes about the whole thing.
So please kindly revert me back as soon as possible about what should I do.Also giving me further directions about what should be the right procedure if this above thing isn’t fake.

THANKING YOU,
YOURS SINCERELY.
DILIP SHUKLA