State tax filing

The NJ Department of Taxation should be ashamed of themselves.  I filed two clients returns in February and they sent a letter 2 weeks ago to send in information. They are blatantly under serving the taxpayers and are holding refunds for no reason.  I'm a CPA and also tried to call their office and was not able to get through because they have an automated service that said you are not accepting phone calls.  This is appalling that nobody is available to speak to tax payers or CPAs representing tax payers.