Terrible service from Mtn, they do not respond to my query even gave me a ref no but no reply

I sent a direct message to Mtn on their facebook page on 6 June as follows: “Good day. I use to get a sms every month to tell me how much my account has been credited with for the new month Last one received was 2 April..has this stop now or what? I also contacted them directly on facebook. They just say sorry we will comeback to you. I went to a Mtn store and from there we queried Mtn twice! I received a ref no 1- ********** 6747. WE asked them from the store…I asked them on Mtn website…I asked them on Twitter…today 9 July and still NO Reply! Nobody at Mtn is interested to help…but they take my money. Please also have a look at all the unanswered queries on facebook…there are people with bigger problems than mine…no response. Well this is the worst service I have ever received. Shame on you Mtn…