What could be the problem if i replaced altenator and battery but it still wont hold a charge

What is your question?

I've replaced my alternator first then shortly after my battery, and im on my 3rd battery with in 3 months now. My vehicle shows battery charge issue. I've had the battery checked before I put it inanx andand then they go bad but the last battery I bought it happened over a couplehours. I've went through looking for a drain by testing fuses and all seemed OK. It would throw a clicking noise previously when attempting to turn it over, but not sure if it is so dead it won't push the starter. I ve had the alternator tested again thinking a faulty alternator, but the guys at o rieleys said my battery was good, alternator was good' and the starter was good so im told. What other issues could I begin to look in to. How do I know if it's a starter issue, parasitic drain, relay, fuse or any of those. Any help would be greatly appreciated.

How long has your 2011 Jeep Grand Cherokee had this problem?

A couple months