Bad Service

I bought a new Mecer inverter and on installation, I am getting an error code 09 which is an internal error. I took it back a day after I purchase it. They then say that they have to send it back to Mecer. They say Mecer is the problem and they have trouble with Mecer as a supplier. It will take 10 days before I will have an answer. Really? Selling a faulty product then I must wait 10 days for replacement!! Think twice before you buy a Merer inverter from Segen...... I think that when selling a faulty product that the client deserves an immediate replacement.