I am extremely disappointed with the migration team's handling of our phone line. It has been seven days since the issue started, and it remains unresolved. The senior management needs to properly train their staff to understand the customers' existing phone systems before migrating to version 3.0. Their lack of preparation has significantly disrupted my operations. As of today, July 12th, our phone line is still down. The customer service has been appalling, with repeated promises of callbacks that never happened. I have contacted them five out of the seven days trying to resolve this issue, yet nothing has been fixed. To any new businesses considering their services, do not be fooled by the positive reviews. As I write this, I am currently on hold with a customer representative who refused to let me speak to a supervisor or manager. After confirming multiple times that I wanted to escalate the issue, I was told they would raise a ticket. When I insisted on speaking to a supervisor, the representative finally said they would check for availability. I have now been waiting for over 20 minutes to speak to someone. This experience has been frustrating and unacceptable. I strongly advise against using their services.