MTN feedback on requests non existent

I am so frustrated with MTN service. I have a contract which expire and I want to cancel it,and have tried to contact them several times. As I live in Lesotho I used the international nr. Every time I hold on for 20 - 30 minutes and then once someone answer they drop the call. I also send various emails to there email address [Email Removed] and no reply after various requests. I also logged a complaint on the website and still no one seems bothered to assist. I just gave up on this. Last week Friday I visited MTN Preller Plein in Bloemfontein and was in process to move another contract to them from cell C. They promised to activate the prepaid sim as their system was offline over the weekend. To date the sim has not been activated Today out of frustration I dialled MTN customer service again. I held on for 40 minutes at international call rates and again the lady answered, I discussed my problem and call was dropped again. It is impossible to get anything resolved trough MTN call c