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This sounds like a potential scam

I’ve searched our Financial Services Register which is a public record of firms we authorize and regulate. I've been unable to locate an entry for 'Extstock'. ExtStock is not authorized in the UK to carry out regulated activities.

Please be advised that if you deal with an unauthorized firm you would not have access to the Financial Services Compensation Scheme (FSCS) or the Financial Ombudsman Service should anything go wrong.

Your next steps

If you’re concerned you may have been a victim of a scam, you’ll need to report your dealings to Action Fraud. They’re linked with the police and are tasked with investigating matters such as financial crime, scams, and identity theft. You may also wish to speak with your bank if you have provided them with your account details or made payments to the company/individual.
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