Disappointing behavior of bmw don't trust them

Hello i had a problem with my finance I called bmw finance to make them alert about it I told them I am not going to be able to pay full amount the day I buy this car I was told if I can have any issues about payment I should just come then I will be assisted I told them I am not going to be able to pay for two months then after that I will pay full payment plus little bit extra so to cover the past two months after that two months I pay installment and I called them to request account number so I can be able to pay, my account was escalated to collection department I no longer dealing with bmw where I bought a car from guys be careful don't listen to such stories that wen you have financial problem take it back that's my advise to all be alert.