That is a SCAM. DO NOT respond or send any money or passport information. If you have already sent money, file a police report ASAP and inform your bank.
All UK government emails end in .GOV.UK so you know that's not a valid email address regarding your work permit. Second, you don't send money to anyone, especially nobody in India. You have to pay in person when you go to the High Commission or their authorised visa agency with your passport and get fingerprinted. You never pay anyone else or before you appear in person. The fact they are in India and you have their name and account number means you need to contact the Indian police in Mumbai so they can investigate. I would also inform that bank that one of their account holders is scamming people so they can freeze that person's account to prevent others from being scammed.
Here is the British High Commission webpage with contact details http://ukinindia.fco.gov.uk/en/
Alex de Carvalho is the head of a PR agency in Miami, not a hotel manager in London. He probably has no idea his name is being used to scam people http://alexdc.org/about
If you were not flown to the hotel for an actual interview, or did not interview with the Holiday Inn corporate office in your country, then the job does not exist. Hotel workers are not on the skills shortage list so they cannot sponsor your visa, and companies in the UK NEVER offer jobs over the internet.