AutoNation Toyota Gulf Freeway

My father looked for a used vehicle for week until he located one he liked (2005 Grand Jeep Cherokee); he asked me to accompany him to finalization process to ensure matters were handled suitably. He had spoken to the Internet Salesperson David who refers to himself as "the ranger" on several occasions and had ridden in the vehicle days prior to me assisting him through the purchasing process on January 20, 2014. He is rude and condescending and hung up on me. I have located a few negative reviews about him that are consistent with what we experienced but perhaps not as bad as ours. Autonation Gulf Freeway should be ashamed of it’s business practices and the lack of safety concern for its customers and their families.We were told that the dealership would not replace the bumper, as they were already losing money on the vehicle. Yet, the manager agreed to fix the bumper and replace the one used tire on the vehicle to match the three new ones already on the vehicle. Shortly thereafter David left us in his office and returned with a new invoice with an added fee for the bumper and the tire. The exact amount I quoted to the manager that I had gotten from the body shop I contacted. David failed to mention added fee on the invoice and instead placed it in front of my father to sign while making small talk about how he wished he could get a deal like us. Having researched the cost bumper, we decided we would accept the added fee and let the dealership replace it. However, while the additional fee was included on the invoice, the documentation to repair and replace the tire was NOT among the paperwork (but merely written on the bottom of the invoice) when attempting to complete the financial transaction with Ray in the finance department. When I brought it to Ray’s attention he explained that it had to have the manager’s written approval along with a signature. He then located Mr. M.and requested the documentation. Mr. M. appeared to have been bothered by the request. On the second day after purchasing the vehicle from Autonation Toyota Scion Gulf Freeway, the vehicle’s horn began sounding arbitrarily in the drive way disturbing us and our neighbors. We first thought someone was attempting to steal it, but after listening to the rhythm sounding from the horn it was that of a femata (long and continuous sound and then changed to vibrato (pulses). This same sound continued while the vehicle was being driven on the freeway and side streets causing it to be a definite safety issue. We're filing a report with the State Attorney's office and TXDMV and Autonation's CEO Mike J. because there is no way this vehicle could pass inspection with the issue with the horn. We have tried to work with the dealership but to no avail. I have been spoken rudely to by David, referred to as a "girl" and abruptly hung up on; And apparently I'm not the first as there are several postings on line about him. I will post the links later and if possible the video/audio recordings. I will also be emailing Mary C., Customer Relations Manager at the Autonation Gulf Freeway location. Shame on you Autonation and such a shame to the brand. My actual rating is -100