Worst Customer Service Ever

Worst service ever! My inverter is in the warranty period and started going faulty so I sent it in with the option to replace. Got an email from them a day or two later stating that there is no stock so I have 2 options (either get a credit or send it in for repair). I respond that I DO NOT want a credit. Without even getting back to me, they refund my account (bear in mind that the inverter I sent in has now increased in price by R2200). I call multiple times, first lady I speak to is very arrogant and tells me they cannot do anything. I tell her that I was not contacted. Then I call again today and the guy tells me its fine, they can reverse the credit and send my inverter to the supplier for repairs. I get an email now saying it cannot be repaired. Such *****! They now want me to use the credit and fill in the difference to get the inverter when stock becomes available. I think its just a lie! As a matter of fact I think that they are going to resell my item to another unsuspecting customer at the higher price! That is what I can conclude because they have not even provided me with an option to get the inverter back. I say again…WORST CUSTOMER SERVICE EVER!!!! If I could, I would give them negative 5 stars. I hope Amazon comes to SA & blows them out of the water!!!