17 months faulty line still not fixed, ***

17 months faulty line still not fixed, no response to emails. No response to fault reports. Not one complaint has been responded too. Where on earth do you call a number and it rings twice and you get cut off. You on a call and within 5 mins you have an engaged tone. Numerous emails to the efc center no response. Is this what you get for your moneys worth. This is a business line, this is totally unacceptable from a provider. Is customer service and bad lines last on the list. Shame on the company