Supersonic poor Support / Customer Service

I have app**** for Air Fibre, and as per them it was available, i have completed the whole process incl installation payment , i have tried calling them, i have tried via email as well as whatsapp, and i do not get any response from them

they have sent me an email this morning as follows

Dear Riekus

We are sorry to inform you that we are unable to deliver Air Fibre at your address since it is no feasible.

Did you know? We have alternative product options which you can view on our website here: www.supersonic.co.za.

Want to chat? Call us on ***or WhatsApp us on ***.

The Supersonic Team

now i need the refund of the installation fee however cannot get hold of them in anyway possible..... this is very very poor as a service provider / MTN so is there any other possible way to contact them ....

i have done the application this past weekend and all was in order until this morning .....

very very poor service , will not recommend them at all, now its a battle to be refunded and we need to pay another service provider