If you're struggling to get accepted for credit with a lender, it's most likely due to your credit score and may be because the details you provided on your application form differ from the information on your credit file.
We understand that it can be really frustrating and, although your first thought might be to submit another application, this could further damage your chances of getting accepted. You can check your credit score by using Clear Score, a free to use credit referencing website which will allow you to view details of your personal credit file and get an idea of what you're doing well and areas that may require some improvement.
The following guides may also be useful for you to read:
Why have I been turned down for credit?
12 ways to improve your credit score