No Response Or Customer Care

I have been with Mtn for years now and still haven't learned my lesson - Well now I have.... Every time I open a contract or upgrade via Direct sales the Sales Person will guide you and constantly be there for you every step of the way but as soon as you have received your handset and activated your Sim they loose contact with you. Like sale in the bag now lets move on to the next one..... I have been constantly mailing the Sales rep about an inquiry on the same email address I mailed initially to get my handset and on which was responded before - now no reply or anything????? This frustrates me as I have been a loyal customer for years now and this is what I get.<br>