Support will not exist if you use a non custodial wallet because only you have access to your private key and can move it. When you get hacked or scammed, the scammer or hacker is another person who has access to your private key. Bitcoin developers don't have access to your private key, they can not help you. And most important, your bitcoin was moved and irreversible already. If developers of that Bitcoin wallet can help you, they can steal your bitcoin too and you will not want to use that wallet.
Support will possible for exchanges when they can freeze your account and if you are fortunate when hacker, scammer did not move your bitcoin or did not move it all, you can get it or part of it after the exchange customer support is completed. Use centralized exchanges, online accounts to store your bitcoin is risky.
Reminder: do not keep your money in online accounts