Company goes back on statements!

So I've had this Aircon Comp. in several times to try and fix my units. At least 4 techies have looked and given different opinions. Finally a head tech arrives and verbally informed us that all the other guys were wrong and knew nothing. I had other witnesses to this. The unit still does not blow cold air. I got a call from Airtronic and after informing their owner /manager of the situation he said he understands it does not work and he will waiver the cost of the visit (AS IT DOES NOT WORK). He then in a round about way said that I cannot call them again to do any work. I asked if they could not fix it to get a quote on a brand new system t which he said he will only do that if I pay the visit fee's. I said thank you and left it at that.<br> <br> Now on Christmas Eve I get a Whatsapp from Graeme Cannon informing me of the outstanding amount and threatening legal action.<br> <br> This for a service that could not be rendered useful? For asking for a quote on a new system. <br> <br> Please Sir. Think this one through again and get back to me in the new year.<br> <br> I cannot possibly pay you for a service that you could not provide.