They are one of the worst customer service and mostly useless CAs. I had switched companies that year but my latest employers finance guy being lazy had decided not to deduct any tax at source since he didnt want to calculate how much tax should be deducted!
I told tax manager the same thing and gave them a full form 16 and a Appendix B of Form 16 showing my income and told them there was no tax deducted at the new employer so no form 16 from there.
I was informed I would have to pay the challan of some amount on the income tax website before they could file the tax. I asked them how it works if I want to pay the income tax at a later date as I was cash strapped at that time. There was no reply from them and then I get a call informing me that there was some calculation mistake and I dont owe any tax.
They will file my return. When I received the filed return from IT via email, I could see it was all wrong since my salary was shown only from the first employer. I called them up and told them what happened. The answer was that the government doesnt know about this salary from second employer so I can chose not to file a revision or they will file the revision for me.
I looked up the laws regarding filling the revision and found out it could be filled till 31st March 2015. I called them after about 2 months and related the conversation and that I wish to file the revision. They told me their charges and when I asked them why should I be paying when they made a mistake and even forwarded the relevant email where I had asked about paying deficit at a later date and no reply. The response was that I must have asked them to file the wrong return!
The most unprofessional part what even if I had, should they be filing a wrong return! My advice is to stay away from them and not to trust any site recommended/promoted by HDFC blindly as this was by HDFC right before the IT returns season.