There are many numbers you shouldn't answer - as this could mean losing your hard-earned cash.
Fraudsters are becoming more and more deceitful in how they steal people's money. From emails to text or phone calls, there are numerous ways fraudsters will try to contact you.
Some scams include a phone number that people should call, but you should never do this. You should also be wary of unfamiliar email addresses or unexpected communication from a company.