worsening service

system down on Tuesday afternoon and only backon on Friday morning. They have a virtual monopoly on fibre installs and their service now shows. Early faults fixed within hours but now getting longer and longer. (& don't even think of calling them direct!!!!) Down 3 times in May. Use the internet for business and lost significant income from Tuesday to Friday. Now going to instal 4G or LTE-A and s**** my fibre subscription.