Deductions & credits

Wow, I have the exact same problem and was wondering why adding my third amount of interest was INCREASING my taxes.

I would think that, with people refinancing for years, the questions that I answer for the turbo tax program would account for this.

Don't they have some promise or guarantee to get the best refund I am due?  

I would call Turbo Tax to talk but I can never find a number and/or get a person.