Can I exchange products? I purchased TurboTax 2018 for Mac however it does not open on my iPad. I either need a refund or exchange it for a Dell laptop.?

I am having the same problem with the software, I need a refund as well. Hopefully we can get a resolution. 

You must contact customer service for a refund.

There is no single published number because it changes contently depending on the nature of the call and agent availability. Following the link below will either give a current number for you to call or take your number for a callback.

(Note that phone support is for paying customers only. There is no phone support for Free Customers.)

Here is a TurboTax FAQ for contacting customer support.

https://ttlc.intuit.com/questions/1899263-what-is-the-turbotax-phone-number

If you bought the Mac software you can call in and ask for the Windows download for your laptop.  @bramirez1956 

If you have the Turbo Tax CD it has both windows and mac programs on it.