Taxactonline.com / Rude and unprofessional company

I decided to return my tax, so I went to the website www.taxactonline.com. I filled the form and made the claim, and in result I got the big sum. I was a little bit confused, but the agent told me that everything was ok. After 4 days I got the phone call and the agent started to ask, why I haven’t paid them money back. I was shocked and it turned out that the sum was wrong and they wanted to get it back. I tried to explain it to the agent, but he was rude and didn’t want to listen to me. Better don’t return taxes through this company.