Poor service

Afternoon I submitted my car at Renault braynston for a broken door handle and a sound in the engine on the 16th april 2018 and ever since I had to call the dealership for feedback and rent a car......It's more than 3 weeks already and am struggling to commute to work daily and I can't get a clear feedback regarding the progress of the engine,customer service department always promises to get back to me and never so.