Bad service and disrespectful

Good day I bout materials cash at built it callinan they emplees gave us attetitude.First they delivered wrong material we understand & they repeat it again we complained to the manager and Moses they did nothing.Today it is worse they even calls us name and the builders ppl they want to finish now as we now they are shouting at us they say they don't care and we paid in full .they left theatrical out side the yard . Your assistant will be highly appreciated Regards Mrs kekana