I feel very sorry for you. It must be very frustrating. I am not sure you should leave it. It only encourages further hassle for other customers in future. Sounds like a scam to me.
Make them aware that they are known on this site and maybe ask
CM to post a bitch on your behalf.
Oh btw, your English is too good. You have to talk to customer support in very plain , to the point , simple language I find, or they get very confused. Most customer support is confused at the best of times.