Welcome to the Q&A Forum

How long ago did you make the changes, it sometimes takes a little time for the meta data to be recrawled, resubmitted and indexed, I often don't see a change for a few days. I am going to presume if the meta was automated you are using a CMS of some sorts. Might be an idea to check your installation and settings to make sure you have cleared and reset them, upgraded them and also possibly reset your cache. Google sometimes reallocates meta description to something that is more appropriate, but I have not seen it in titles. I would imagine someone will probably have a better answer. But you can at least tick these of the list on the way to your solution.