1800 numbers are common everywhere. They give a company a professional edge. If however, behind this 1800 number, there lurks a bad IVR, it is going to destroy credibility more than ever.
I often note down the options when calling a company service center as
1-2-3-1-1 -> get to billing information
1-3-4-2-1 -> talk to customer care.
Next time I don't bother listening.
If there are too many options to chose from customer will be put off. Avoid them and keep it simple.