MTN the non exist ant connection

I had a positive balance on airtime but cannot phone out. (No Airtime message. Went to MTN shop, phoned call center, they reset the phone.They said to give it a couple of hours and restart the phone. I had to drive 700km to my destination. When I arrived at my Complex at 2am I could not phone the gate to open. Nevermind the fact that I had to travel without a working line. I had to wait outside my complex until 5:30am. I have been a loyal MTN customer for more than 10 years. Average bill of more than R700. 00. Thanks MTN. Cannot wait for the standard company we are sorry message but will try to improve. Thank you for putting my safety at risk