I have a blog dealing with a rather small genre of music. A software program is widely used in that genre and I posted about it, asking for other user's opinions and experiences with the program. One comment concerning the software was rather negative about their experience with the program company's customer support. Since that time, a representative of that company has contacted me at first asking, then telling me to remove the negative comment, telling me it is "slander, libelous, and defamation". When I politely refused, they have threatened to turn me into WordPress as a violator of the TOS. I don't think it is, but I'm looking for others' opinions. The comment in question is below.
"No, it is not compatible with MAC machines and there are no plans to make it so. Another thought is regarding the “support” that is (not) provided with the ********** program. I have sent at least ten emails since I have had my system and have never received an answer to any of them. If you try to call, you have to pay $1.85 per minute for the privilege of talking to someone who still will not provide the assistance you need – no matter how trivial. Right now my system is down due to a hard drive failure and I cannot get any assistance throuigh the support system at all. The software is a good system but the support is non-existent. Think about it before you lay out a lot of money. This is pricey software."
So, is the above quoted comment libel/slander/defamation?