hi,We were granted a 600 visa last year which expires in May 2021, We are UK citizens and had already been on a 600 visa visiting our family, As the situation is not improving,wait for vaccinations and few flights available,we would like to extend this visa. We cannot find any information,the phone line is of no use,and a current email address for information seems unavailable. The last 600 we had we stayed for one year,departed the country for six months,then had another year. Do we have to apply and pay again for another 600 visa or can the six months off shore be waived? If someone else has been in this situation and can offer some advice would be grateful. We support ourselves,family are Australian citizens but we cannot apply for permenant migration as we do not meet the balance of family,Thanks.