PCP during the Approved Used event

Hi

I'm in the midst of buying a car during an approved used event that's currently running. My intention was buying outright but the dealership suggested taking it on PCP in order to benefit from £750 towards the finance. They said if I cancel after the first 3 payments and pay the remaining balance outright then I'm still eligible for the £750 but won't be penalised with years of interest.

My extensive AI conversation about buying the car suggested that under consumer rights I can actually cancel within a 14-day cooling off period and still not be penalised.

Does anyone know which is accurate? Is the whole 3 month thing just down to a commission payment for the salesperson or do I actually need to pay the 3 months to keep the £750 bonus?

Thanks!