Switching to Slingshot

Hi folks

So yesterday I decided to do some digging into my ISP costs after my current provider bumped by bill up by $10 a month as I was no longer in contract. This lead me to the gigabit plan and 6 months 1/2 price deal offered through broadbandcompare. Sign up process was smooth, no complaints there.

My question is in regards to my current provider. When should I cancel my existing connection? I put the end of month down to activate the new connection.

The month just started so I'm not under a time pressure, but I assume that there will be a 30 day cancellation clause (Vodafone) so I need to get onto this sooner rather than later?

Just a bit lost with the whole process

Cheers

Sen