Got some credit for referencing my friend. The credit had no expiration date, but they took it off anyway after 3 months. First they tried to convince me that I always knew the credit would expire. Then, when I showed them the email that they sent me saying otherwise they conveniently stopped replying. Too bad, I was happy to turn a blind eye to their many shortcomings (discussed in the many other negative reviews), but not this kind of shady behaviour