Online scammers are calling potential victims from telephone 02837619010 and leaving a voicemail of an automated voice saying that their National Insurance[NI] numbers are at risk of being suspended if they do not call back. Therefore, recipients of the same call should not follow the scammers' instructions. They should just delete the voicemail and should never attempt to call back the number. This is because the scammers are attempting to steal potential victim's personal and financial information.