Can you help me fix an issue of my device being hacked?

Can you help me fix an issue of my device being hacked? Apparently these scoundrels have nothing better to do than try to make my life more difficult than it already is! When I tell you these people are treacherous…well, just amazes me! They have a bad habit of strealing phones…One of which was mine..which is why I'm resigned only to my tablet at the moment! Been trying to get free of this problem for 3 !months now! I truly need some expert guidance! SOS!!!Thank you! I so hope there is someone out there who can help me!!!