Multiple calls from 01020

Nanaa -  
 mark -
Hello,

We've been receiving calls from 01020 several times a day for 3 days, and as soon as we answer, there is no sound. What is this??

Thank you for your responses in advance.

1 answer

  1. Nanaa
     
    PS: It is on the landline that the person is calling.
    0
    1. mark
       
      For what reason is he calling us?
      0