Very bad service

What mtn is putting me through is hell. I upgraded via mondo on my mtn contract to a laptop. They sent me a router and a voucher for the wrong laptop which cost half the amount of the laptop we agreed on.. It's been two days calling mondo and being referred to mtn and when I call mtn I am sent to call a number that deals with those vouchers and the very same people tranfare me back to mtn customer care without even listening to me. I am stuck without a laptop, a R22000 contract bill and a router I cannot use. Mtn has gone to the pits to be honest. Dissapointed is an inderstament.