Lost sales due to incorrect call diverting

As a service based business we rely heavily on receiving phone calls in order to book clients. We requested a call divert function on our landline as part of our store was going under construction. We requested all calls to be diverted to a cell phone. Easy right? No!<br> <br> Not only did they not do what we requested, but they reversed the diversion!!! So not only are our customers who have our landline number not able to contact us but the customers whom we gave our cell number to are also not able. <br> <br> We are losing sales hand over fist and after numerous emails and literally hours on the phone we are now on day 3 with this situation and no change. <br> <br> How can an organisation be this inefficient - it blows my mind!!! <br> <br> If it were a personal thing I wouldn't have the urge to use this forum to complain but the fact is that it is now impacting on both the companies financial survival as well as our employees livelihoods.