OAS applications are taking 6+ months to process. You will need to either check the status online through your Service Canada account (https://www.canada.ca/en/employment-social-development/services/my-account.html). or by calling into Service Canada 1-800-277-9914. They have stated that you should not apply a second time unless they have not received your original application. You won't know if they have or haven't unless you login or call. If after this you still don't have a satisfactory answer please reach out to your local MP's office.