Shocking Service Neotel

I am at my wits end with Neotel data...I have been without my Wimax internet connection now since 27th May. At that stage we had an intermittent service. A call-centre agent called, and at that stage our connection had miraculously returned, only to die permanently after the next bout of rain. After further correspondence on 4th June, they eventually sent a technician to have a look at the router. There was no problem with it and I was informed on 9th June that an Ellies technician would be in touch to arrange a replacement of our antenna. There was apparently no stock at that stage (NOT MY PROBLEM). Since then, I have not received any further correspondence. I have made contact via the call centre and through further emails. Absolutely no contact whatsoever. I also requested that they come back to me regarding a refund on my NeoGo wifi sticks that I have been using in the interim for my business. NOTHING - NOT A WORD!!! I am paying for a service that I am not receiving and running up an excessive bill on my portable wifi in order to be able to keep running my office. I have no idea where to go from here. I cannot begin to describe my anger and frustration!