Bin is the feature in Gmail that stores the emails that you had deleted when you found them redundant. However, if you want to access bin and are unable to do that, then you might think that how do I contact Gmail Customer Support to get this issue resolved. Well. you can refer to expert websites to get the issue fixed or if you’re still unsatisfied then you can contact the email service provided through chat or number by Gmail. https://www.experts-support.com/gmail-technical-support/