You wasted your money on Lifelock, that's for sure. Norton is one of the worst possible pieces of junk you could install on a Mac. All - and I do mean all - AV software is 100% useless. There no Mac viruses. None. Period. There's nothing for them to find.
There are plenty of Trojans, which is any type of malware YOU must install in some manner. Pay attention to where you're obtaining your software from, and you should never see any.
Beyond all that, what kind of "MAJOR" issues are you referring to. Vagaries don't tell your fellow users much of anything.
And what representative are you talking about?