i have no words

Hello everyone, i bought some credits for ps4 in rocket league game from this seller https://gameflip.com/profile/us-east-1:f28a7484-7bdd-46e1-8715-d4332ee3303f/sara-?page=1&sort=updated%3Adesc&start=0

He told me ‘‘wait me 2 hours’’, i am already waiting 4 hours and he keep doing deliveries for anothers but not for me, here proofs

Even when i bought, he told “I won’t take this price.”, but i am already bought, lol! So, i think he just trying to hold my money because i am selling rl stuff for ps4 too. Should i message to support or do something?
His psn id is “seasonicle”