Horrible customer service! Have had my SUV at thei...

Horrible customer service! Have had my SUV at their dealership since the 11th of January due to an issue with my breaks (a defect). I have been contacting the dealership (service manager Will) for 11 days now leaving multiple voicemails with NO reply(zero updates on my suv)! Have even called asking for a GM to return my call and nothing! A loaner/rental was suppose to be provided to me on the 21st of January and now one week later still nothing! Would definitely NOT recommend this dealership/service department.