Many customers are paying their cable, internet or phone companies $30/per month for each line. I recommend you switch to Office 365 with phone system and calling plan. It will cost you no more (it will probably save you money), and will provide a very substantial group of features that will enhance the productivity of your team noticeably.
It is urgent that your computers be backed up in an effective manner continuously. The good news is that it is easy and inexpensive to set up automatic back-up that requires no action on your part and has the characteristics we look for.