Hey, @Virji24
Sounds frustrating what you're going through if you have to keep constantly contacting Support for your purchases. Even though it's a purchase for our game, the transaction goes through the PlayStation store for the payment method you have under your PlayStation account. Have you reached out to PlayStation Support at all to see if they're aware of anything impacting your account from that side? There are region locks for content, so if you made the purchase while accidentally on a VPN, you can be charged but the content won't show up.
PlayStation Support