If your lease agreement terminated by its own terms at the end of 6 months, the landlord may choose not to renew your lease for any reason so long as he/she does not illegally retaliate or discriminate against you. Also, if your lease agreement requires that you give written notice to the landlord of your intent to renew and you make a phone call, that will not be sufficient. You should look over your lease agreement to see if there was anything you failed to do with respect to the renewal of your lease.
Please be advised that the information provided herein is for reference to interested persons only and is not intended to create an attorney-client privilege and/or communication. Any information provided herein should be not substituted for the services and/or advice of counsel.