Price Increase before contracty even started

My installation was done to satisfaction even though the account details has not yet been sorted out - What has really got me going on this Company is that my contract has not even started yet but I am already getting notified of a Price increase in April. So I would have been paying for a month or so on the price I agreed with in my contract and then pay a higher amount - Not happy about this but everything is done so I am pretty much *****ed into a contract - am seeking legal advise though through the consumer board - This company is not very customer orientated and seems to be wanting to cash in as much as possible on the back of all the power outages - I am extremely disappointed in my choice of solar provider and would like to advise people to shop around and make a better informed decision - the installers were great but that is the only positive thing I can say