Poor service/ Poor communication

I am not getting any help from your fibre department. Ordered home fibre through MTN and they have assigned a 3rd party "supersonic" to oversee the installation. These supersonic people claim that they have been unable to reach me, whereas they have not made any attempts to call me. MTN please intervene because I can't lose my hair over this stupid administration mishap from your assigned third party. I regret leaving vodacom for such treatment....