I bought ps4 credit from 2 different providers on the Internet and both promised to send the code directly by email after the PayPal payment?

No codes in the mails, not even in the spam folder. What would you do in my position? Use the right of withdrawal and hope that you transfer the money back or withdraw all the money in the account so that PayPal can't withdraw the money and therefore the order is missing

How did you pay, goods & services via PayPal or Family & Friends via PayPal?

… Or draw all the money in the account so that PayPal can't withdraw the money and thus the order is missing

Bad idea:
Then not "the order fails", but you don't owe the money to the sellers, but to PayPal.

And then you will get to know the term debt collection right away.