Spare key for my vehicle

Hyundai Hatfield has bad customer service, the lady who assisted me with the delivery of my vehicle forgot to give me the spare key of the car, when I ask them to help me they tell me they didnt help me with the delivery of my vehicle and the poor lady is on maternity leave. I dont understand how many times I have called and they take my number but they never call back, I've stareted paying for this car already but I do not have all the things I'm suppose to have. I regret the day I walked in their garage and bought a car because they are very rude.