Nightmare to deal with MTN - No feedback - not taking my calls.

We have been trying to process a change of ownership for the contracts registered under a business. The person assisting has given zero feedback and has stopped taking my calls. this is critical as the one company is closing and the contracts need to be transferred. Extremely frustrated and annoyed at the lack of feedback and lack of courtesy to respond. This is costing us legal and auditors fees to keep the company open until the transfer is done. Customer Care has not responded.