I have been receiving phone calls to my business number from +447500177036 and +447700134363.
Someone calling from… you have an account with us… balance 4.2 bitcoin… no activity, so frozen account… “Please let me send you an e-mail with instructions how to unfreeze the account”, “We are here to help you with all the steps.” …

Let me show you the e-mail:

And the supposed balance screenshot:

So many triggers! Anyway:
Sure, let me transfer some money to reactivate my account 🙂

Use your brain; don’t get scammed!
If it sounds too good to be true… it is!
Have a nice day!