Payment problem Real Racing 3

hello, i have problem. I bought a Ferrari F50 + VIP car with a discount of Rp61,050.00 in Real Racing 3, then the next day I asked for a refund. Then my funds were successfully returned to my wallet, but my Ferrari F50 + VIP was still usable. So am I using an illegal car or cheating? Please, I want to fix this, thank you.