Vodacom paying for what???

Our fibre was installed on the 19th March after having to follow up a few times after our request for installation. Since the 20th March when it came on it was off within 5 days, a hotel day again after that and again from the 5th April to date. I have logged a technician request and no one can say when the technician will come out after I was told by the agent it takes 24 to 48 hours. We opted for a 35 month contract and would certainly like to cancel now within a month of all this! What are we paying for and this chosing Vodacom after being client for over 20 years! Please advise the cancellation process as surely this is not service!