Poor service

One of our company cell phones was disconnected last Friday - when we queried why we were told there was a technical error and they would reconnect. The line was reconnected Friday evening. Again on Monday the line was disconnected with the same excuse. It was reconnected and again disconnected on Tuesday, then again on Wednesday (today) This line was disconnected at 8am and it is now 14h40 and STILL it has not been reconnected with the branch simply saying it is head offices fault? We can not run a business with an unreliable cellular provider. If this continues to affect our business then we will have no choice but to cancel all of our contracts and and use another provider.