MTN Not Resonding to Queries

I have sent eight queries to Mtn via [URL Removed] [URL Removed] They closed seven of these without replying to me. The second to last one was sent on the 5th December (number ***) and was closed again without a reply. I phone the customer support centre and spoke to Lilian who could not help me. My lastest query was sent yesterday and reads as follows:<br> Kindly advise when I may expect a reply to my query ***? As from the 4th my night time data is also being used for my day time surfing. What will happen when my night time data is depleted? I spoke to Lilian of your support centre (must be the worst in S A)who advised that she could not assist but would escalate it. Please phone me on *** with a urgent reply.