I left the country without paying bills

A lot depends upon the type of charges. If they are all traffic ordinance violations, there should be no problems with your visa. However, some traffic citations turn into a misdemeanor bench warrants for your arrest if you failed to appear in court. Try to contact the courts via Internet or telephonically in order to determine that there are no charges outstanding against you. Very often, my clients abroad, ask us to conduct a due diligence search of traffic or criminal charges to provide them with the appropriate court clerk documentation confirming that there is nothing outstanding. You may wish to retain counsel in those cities for that purpose. Good luck to you.