There's that Elite Visa for ~$17,500USD which provides a lot of nice perks. If you're financially able, you might want to check into that one, while you're at it.
There are several agencies which can assist you with it; here's one I just found by Googling:
Walk away (politely decline). Those bad reviews are waving red flags, and, as mentioned, they're already not playing fair by attempting to compromise the good visa you already have.