10 days without a phone for small business

Our small business, Sea Monster, has been waiting 10 days for our phone line to be fixed. On Friday I phoned and they assured me that the line was being fixed currently by the technicians. We still have no line today (nor the businesses next door). As a small business this is urgent, as we are losing out on potential clients and business. Every day that I phone, I am not receiving a proper update eon the phone line and when it is going to be fixed.