MTN Cancellation request for no service

Can you kindly help me with a cancellation request because there is a breakdown in service from your side? Service on my router was cut a day after the debit order. What I will not do is pay an early termination fee for a product you are unable to provide, unfortunately. Please call me back because calling retentions is futile and you know that very well. I spoke to Ziyanda, who was very nice and all, but it was not within her scope of work. Please give me a call or email me, please. It is quite urgent. Please be made aware that your retentions team is non-existent and unreachable.

Muchas gracias