Mtn Dual Call

I went to my local Mtn outlet last week on 2 June 2015 to have dual call activated, purchased a second sim card and was told it would take up to 48 hrs for the process to be completed and the sim to be activated. The sim is still not active and despite my reporting it on Mtn active and several emails to customer service from the local outlet it is a week and a half later and still no reply on 11 June 2015. The staff at our local outlet have been very freindly and helpful but Mtn customer service sucks!!!.<br>