If you want to know how to recover your hacked Google/Gmail account then the first thing that you should know is account does not mean you have lost its complete access (Unless your account is deleted). Also recovering of hacked account does not mean you will regain all your data (If data is deleted permanently by hackers from account).
The actual meaning of hacking is some second person has made an unauthorized access in your account and has accessed all your data. Your account will remain same and its data too. Till the time hacker has intentionally deleted all information from inbox permanently. And when Gmail customer support service says we will help you to recover your hacked account. It means support team will rectify all damages made by hacker in users account and user will again have independent and freely working Gmail account.
So, if you ever get encounter with the issues of your account hacking or if you are already going through the same pain then here ways as how to recover your hacked Google/Gmail account from further loss.
As a first step change your Gmail account password. If hacker has crack your password to get into your account then changing of password will be a great help for you. It will restrict further unauthorized entry of second person. If it is the situation like hacker has changed your account password, then first user Gmail technical support page to change your password. And in-case you are not handy with your alternate number to receive information in regards to change password information then you call Gmail troubleshoot team for help.
Second step to save your account from further loss is thoroughly checking setting of Gmail page. Check forwarding, POP and IMAP option. You can login to your account, go to gear option, click on setting option and then click on forwarding and POP/IMAP option. Here you check the page for presence of any strange email ID or configured email account. If you find anything doubtful then immediately remove and bring back your setting to normal position.
In-case of doubt working with Gmail setting page, you can also take help from support team. They will give you step by step guidance for checking setting page.
Also, if you are not willing to follow any of the method then directly call the Gmail customer service team toll free contact number. They will give you complete guidance in easy steps.