Welcome to the Magix user to user forums, so not a contact for any Magix staff and personal information, like your email address, should never be posted to a public forum like this one. Hence I have edited your post.
Magix' Full Terms and Conditions, including about how to request cancellation of a software order, can be found here.
You say you have been charged 3 times of $39.99. That would imply you have ordered the software three times. Is that correct? If so, why? Exactly what problems have you experienced with Photostory? There are a number of experienced users who post here who may well have been able to help you resolve those problems.