Taxspanner — Cheat company

Hi,
I had taken the service from Taxspanner for ~Rs.5000 as it was recommended by the organization having about 3lakh employees. They took all the documents from me and shared the ITR2 for filing. However, my ITR processing was delayed by 6 months and also I received a Tax demand of Rs. 10500 from IT department. First when I reached out to them they took their own sweet time to respond, no responses to call or emails. Post multiple follow-ups they responded saying the Tax is accurate and I need to pay it. When I investigated further I found out that they had made a mistake in my ITR due to which the tax demand was raised with additional penalty as delay. I highlighted the same thing to the team, they responded it as clerical error and still insisted me to Pay tax. I informed them that I pay the taxes Rs. 9500 and they should bear the penalty charges of ~Rs. 1000, they rejected the offer and still insisted me to pay the entire amount. I asked them the reason for making mistake from their side inspite of being a reputated and expert company in Tax filing. They never responded to my multiple emails. Even I sent email to [protected]@taxspanner.com asking refund for faltering in their service, still no response from them. Hence please avoid taking any service from TaxSpanner.