Can I stop my pending tax returns & go file my returns somewhere else

No, you cannot.  "Pending" means your return is on its way and in the queue waiting for the government to accept or reject.  If you file somewhere else, it will show as duplicate in the IRS system.  

It keeps reject my taxes why can you help me 

Are you still in pending and how long have u been in pending

No. The tax returns have been submitted. Click here to learn more about the Pending Status. Filing somewhere else will look like submitting your taxes more than once by the IRS. Watch for the status to update. We are happy to help if there are any issues with the filing.