Bought a vehicle through dealer,financed through mfc. Took delivery a week ago. Want to cancel contract but they say im not allowed, even though the contract state i may

<p>i bought a vehicle through a dealer, finance was done through mfc. I took delivery last week. Want to cancel the contract as im not satisfied, the dealer nor mfc does not want to cancel the contract. Althought the contract states i have a certain period, and the NCA states i have 20 working days</p>