Poor perfirmance by Rain Internet

Joined Rain network, was impressed with the up and download speeds. However on a daily basis I will have connection without internet access. Today had no access since 8am. My business works on internet and email, with no access I lost income. When you click support in the app, they do not even bother to reply. When you phone support they don't pick up, eventually you are cut off. Should you manage to get hold of the sales department, they transfer you to support, and again you are cut off. Seems I should go back to Fibre,