Caller spoke uniteligble english but called me by name a recall to the number gets a busy signal............weird

Spam: One of a group of scam/spam - All of these numbers appear to be associated in same scam/spam group: (02) 7209 0544; (02) 8552 0930; (02) 4875 9027; (07) 5662 4034; (02) 4875 9059; +64 9 802 4308; (02) 4216 9927; (03) 4051 2595; (02) 8111 5873; (02) 8647 4089; +44 20 3996 6033; (03) 6469 0663; + 44 20 3996 6033; (02) 8647 4013; (03) 6469 0653; (02) 4875 9035;(03) 4416 3789; (07) 4410 9972; (03) 8904 8266; (07) 7510 9212; + 44 7451 293035; (02) 7254 3295; (02) 7254 3020; (07) 4167 0261; 02 8111 5873; (07) 4410 9963; (02) 8528 0930

Would appear to be a scam. Possibly associated with numbers (07) 4410 9963, (02) 8111 5873, (02) 8528 0930 - whilst different jurisdictions, all unwanted calls who seem to have bought the same list.