Verify purchase with work or school email

So i searched this up online and have not found a solution. I received an email from @Anonymous telling me to approve my purchase using a work or university email, but the email doesnt tell me how. I am reluctant to provide my work email, as this is a personal purchase. i also do not have a university email or a landline. 

I have seen this topic discussed many times when i looked it up, and everyone seems to think this is a scam, but then their orders get cancelled.

Here is a copy of the email

Dear Customer,

 Your order has been verified, but unfortunately, we are missing your approval from a work or university email. Upon receipt of your confirmation of your order it will be validated and will go into production.

If you do not have a professional or university e-mail, please send us the landline to your delivery address.

We apologize for the inconvenience we cause you, but rest assured that we will pay special attention to your response.

Regards,

 

Dell Canada Team