If you have a complaint against a utility company?

My sister had a disgrepencey with a utility worker at her water company. The meter reader from her water company came to her house and im not sure wha

My sister had a disgrepencey with a utility worker at her water company. The meter reader from her water company came to her house and i'm not sure what went down but apparently the worker was extreamly rude. My sister called to report this and asked to talk to his supervisor but all she was able to call was the call center. Apparently your not able to call the home office where he works out of because they said they don't take incoming calls. She was only able to leave a message for the mans supervisor to call her back. Well she has called numerous times and left messages and nobody will call her back. My question is, would there be a certain place she can call to file a complaint about the fact that nobody will call her back? Because its obviouse they are not going to call her.

or:My sister had a disgrepencey with a utility worker at her water company. The meter reader from her water company came to her house and i'm not sure what went down but apparently the worker was extreamly rude. My sister called to report this and asked to talk to his supervisor but all she was able to call was the call center. Apparently your not able to call the home office where he works out of because they said they don't take incoming calls. She was only able to leave a message for the mans supervisor to call her back. Well she has called numerous times and left messages and nobody will call her back. My question is, would there be a certain place she can call to file a complaint about the fact that nobody will call her back? Because its obviouse they are not going to call her.

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