The number 07520 644 644 has been linked to a campaign of harassment against a victim in the UK. The harassment began after a failed attempt to sell a financial product to the victim.

The victim has blocked several mobile phone numbers, but the campaign has continued relentlessly. She receives calls every day from the same source using different numbers. 

If you receive a communication from this number then it is imperative that you do not answer the phone or ring them back. This is a dangerous and harassing number. Do not answer the phone to 07520 644644