Have your clients checked "where's my refund" at irs.gov?

And yes, it's been noticed that some refunds have been delayed.  There are numerous threads on this board - search/read them.

As to the complaining - politely point out that it is not your fault OR responsibility.

Ive got one accepted 3/31 says its still processing...I dont see anything on it that would cause a delay...retired, with pension and soc sec, some int/divs and itemized deductions but nothing out of the ordinary and all pretty similar to last year  WMR says still being processed....tax practitioner hotline had a 30-40 min queue, so I'll try back another day and see if they can provide any guidance

Is the withholding from Social Security, by any chance?