Ahh fellow Libran I am sorry you are having these issues!
Try changing your perspective.
Ever hear the phrase: Behaviour Breeds, in thoughts and deeds
I tell my kids that behaviour breeds, so if they want folks to be nice to them, they have to be nice first (ESPECIALLY with each other LOL). So what has that got to do with all your communications glitches? Well, if you are getting upset or angry or frustrated a these communication let downs, you are attracting and holding onto that negative energy. In all this are you now worrying that anything you sent (or are waiting to receive) won't make it through? If you are, then you sending that energy out and that is what is likely to manifest physically. In simple terms it's a bit like the old "you reap what you sow" saying.
Another angle could be that you need to communicate something to someone, and haven't done it in a way they understand,so the message they are getting from you is muddled up. When things continually 'hiccup' in our day to day lives, over and over again it is a way for our guides to show us physically what needs bringing to our attention. Perhaps you arent being honest with yourself about something, but have put it in you internal 'denial' draw. It could be something as serious as needing to sit down with someone that makes you feel confrontational, or something as simple as letting the gas men know you wont be aound on the day they are coming to do the safety inspection. Is there something you have been meaning to sit down and sort out by letter but haven't gotten round to yet?
Just some ideas Nova, hope they help.