Rude service from the staff at accounts department

This company has the worst service ever and not to mention the rude staff from the accounts department , they are very rude even on phone calls.I was there a few days ago and i laid a complain of which no one took serious even their manager is standing with them until i went to the sales department and i met a guy called Khalid who promised to call after making a follow up but its been 4days and nothing so far. I regret working with this company but now i have no choice i have to try and finish off my vehicle and get the papers ******* service at all