A/C intermittently stops blowing cold air?

So, basically, the A/C works, I had a leak and had to get a new compressor, and everything seemed fine until only a couple of days after the blend door actuator went out and I was hearing a clicking sound. After that the ac would sometimes blow cold but not always, I assumed it was because of that and once I got it replaced, I thought we were good, but it still only sometimes gets cold, there's nothing specific that makes it turn on that I know of, it's just by chance. I now realize that the blend door actuator probably had nothing to do with the problem, but it took me until now that it's fixed to realize it. I've checked to see if there's refrigerant thinking maybe there's a leak hut there isn't, so I don't know what it could be. I don't feel comfortable taking to the shop because I don't get taken seriously as a woman. Any help would be appreciated please, just need to know what I should be looking at and if anyone knows how expensive this could be, thank you.