100% deceiving untrustworth, unreliable

Ive been waiting for48 days for resolving Onair's mistake... And still the nightmare conti nues! When they installed the explora on the 4 june : a courier delivery service deliverd the machine, then the installer recommended by onair install it and TOOK MY OLD MACHINE AFTER INSTALLING it. That makes sence. After 48 days of battling to get the same service and functions i had before Onair Tv contact me, they PROMISSED the other machine will be delivered om monday (20th Jul) i had to PHONE AGAIN to enquire what's going on! They told me to contact the courier company. After having problems with a time for delivery they came yesterday. BUT HERE IS THE BEST PART.. THEY REFUSED TO GIVE ME THE OTHER MACHINE if i dont GIVE THEM THE OTHER MACHINE THAT IS at present, INSTALLED!! Since when do the customer uninstall the machine that was installed by an installer and give it to the COURIER COMPANIES DRIVER!! ISN'T The INSTALLER SUPPOSE TO UNINSTALL THE MACHINE, INSTALL THE NEW MACHINE AND THEN TAKE THE other machine!! LIKE THE FIRST TIME! So they took the new machine back! Im not going to pay for an installer because of Onair's mistake!Still waiting for the manager to phone!