Terrible customer service , no feedback!

I have been trying to get a hold of the MTN contact centre and or customer services for the past few days and all I get is the irritating music that they play while they keep you on hold , I am currently out of the country and am paying international rates to make these calls , customer services never reply to emails sent through to them to follow up and call centers never call back. I called last week and ask for my contract to be cancelled as at yet no one has gotten in touch with me . This is one of the reasons I will never use MTN again, their customer service needs major help ! Whilst typing this I am now on the line for and hour holding for a call centre agent ! Horrible service !