Missing key

I purchased a vehicle last year and taking the car for its first service, it was figured out that there is no key to open the wheel cap. Apparently Honda can't help since the mag is not a custom one. I both the rim from the dealership surely the key should of been included. Secondly it is now my problem. Pathetic service since the dealership in Melrose is now closed and no one wants to take responsibility at Honda sandton.