I think this is possible with the residents of Mornington Peninsula, Melbourne Eastern Suburbs, and Melbourne South Eastern Suburbs. If you’re from the said areas, expect them to be at your door steps moments after you contacted them.
Guess the people from previous posts were not aware of how Spark Energy does things. It simply goes like this: once your contract expires within six months or less, the company offers future date pricing and makes contracts that begin at the end of your current contract.