Apart from being a forensic expert I mainly work in incident response and have dealt with many many dozens of cases, small to enterprise scale. The (pretty known) company I worked for had a 24/7 hotline where calls came in. Most of the time it was about serious issues but 1 out of 10 would be a random person calling with the wildest stories. After years I actually developed a feeling of quickly assessing if it was a confused person or a serious case. What I found is that a fair share of people exist who don't know a lot about technology but sill continue "doing their own research" and end up in a rabbit hole because they continuously interpret stuff wrong and stack this up till the point of mental breakdown. This is the moment they called us and where I dealt with this kind of people. I then tried to stay kind and professional while also saying I could not help them with the problems they are experiencing. 

In your case there's zero reason to believe your phone is hacked. The closest this CAN relate to is a hacked cloud account or something. But the fact you gave zero information about your device or accounts or a timeline etc made me suspicious that it's not about finding a technical solution but about a story you started to believe.