Snap New Grad Software Engineer interview questions

1-hour phone interview, asked about tree related and word ladder I. Onsite has four hours, a lot of design and coding questions. The worst part is one interviewer is eating garlic and asked me questions at the same time, the smell sucks.. After interview I should receive a $100 gift card to cover the transportation, but I haven't after one month. So I asked the recruiter, she said sorry and she would mail it to me. Till now, I still haven't received it. I don't want to ask her again as I don't need that $100 but your company should have credit. If you don't want to cover the transportation fee of the onsite interview, you should tell me before I came to LA to onsite.