2010 toyota camry car problem

I've had my 2010 toyota camry for a year and it
was working great. In March, I started to encounter
car problems. The car's dashboard started
glitching, the A/C stopped working, and the
speedometer was going up and down sporadically.
I got the car checked out and was told it was the
abs control module which I got replaced (didn't fix
the problem). I got it checked again and was told it
was the alternator and battery and got those
replaced (also didn't fix the problem). I'm stumped
on what the issue could be. Has anyone dealt with
this issue and know how to fix it? Thanks!