How do you handle customer who is never sanctify?

Whatever labeled eventually becomes the client summary label is the person who gives you the money for a service provided to him, the satisfaction came to serve you again and send you customers and others will let you, but anyone who is better than youAnd therefore do all that to your face and Atsthen Atvkdh Bardhaih way more than expectedAl Qaeda says Lose some money and your customer AtkhosrAl-Qaeda and the other says compromise on some things and not give up or lose your customer