I called back number (02) 8319 8900 rang 5 times then goes to busy tone.

Unsure who rang, one of a number of unknown callers I’ve had lately. Rang once before hanging up, no voicemail left

When I phoned this number back the message says it’s ESI something and when you go for the website it’s a really old dodgy site that says the business has been around since the 1980s beware! This is a full on scam!
The website is fake
And they’re just lying scamming mongruls!

I called back number (02) 8319 8900 rang 3 times then goes to busy tone.