Corllins University review: documents not sent

I registered in Corllins University in 2010 and payed money to get legalized PHD from Qatar embassy, first time they send it to me legalized by Kuwait Embassy and they said it's accredited in Gulf countries then they ask me to pay again because of new rules that they have to legalize it from Qatar embassy, they made it from
Qatar embassy in Jakarta, then they ask me again to pay more to do it from Qatar embassy in Washington DC and Im still waiting, now they ask me to pay for GIELTC before they make legalization from Qatar embassy from Washington DC and they said it a new rule from Qatar authorities. I refuse to pay more money because I payed more than 5000$ since 2010 and I didn't get anything.
I want to place an official complaint to get back my money but I don't know where, please help me.