Another case of incompetent CS. Each time you contacted them you were told something different, and actually NONE of it is correct.
While the initial deposit bonus is indeed also $125, the snail mail is intended for EXISTING players, as you were first told, which is why you had to make a deposit. Because you had to create a new account, you didn't find the coupon working BECAUSE you didn't use the account on file.
The problem is that this group moved from Playtech to
RTG, and in doing so shed some casinos, moving those players over to equivalent accounts with the
RTG casinos.
I believe that Diamond Deal or Twin Aces (Playtech) players ended up with SlotsPlus or Sun Palace accounts after the move. Players who already had Sun Palace accounts under Playtech, and one of the others, ended up with TWO working accounts at Sun Palace. Players, of course, were expected to use one of these, and discard the other (not claim promotions on it).
The Playtech style usernames from the two that closed were transferred over, and will work on the
RTG brands.
If you have ever had accounts with Diamond Deal and Twin Aces, try using these details to log into SlotsPlus, or indeed Sun Palace.
If you have NEVER before played at this group, even with Playtech, then they have some explaining to do as to how they got your SNAIL MAIL details for what is in effect, SPAM, but via Snail Mail.