this number contacted me three hours ago but I don't know who it is I tried calling back but all it said was our operation centre is busy right now we will call u back shortly

Called me with silence on the line. Calling back goes straight to message bank saying they are busy and will call back shortly. No information regarding what the business is in the voicemail.

I called back number (07) 3153 1042 reached voice mail but did not say for what company.