British Expats - +375 & + 371 calls

Taken from a PT forum:

Through a close contact we have with a client manager of the Directorate of Public Sector Clients PT receive a message with a request for disclosure we publish in full.

" There are people who have been receiving calls from +375602605281 and +37127913091 or any number starting with code 375 or 371.
Turn on and off, leaving a missed call message.
Bind back to one of these numbers will be charged 15 EUR or 30 EUR and can copy the contacts list in 3 seconds.
If you have banking information or credit card on the phone, they can also copy.
375 is from Belarus and Afghanistan and 371 is the country code for Latvia.
Do not answer or call back. "
The message is in response to the request for disclosure.