its not because u never used MM that you CANT use one now... theres HIGHLY trusted OMMs that had to pass through a long process to become that rank.. why wont you use them if you dont trust anyone else...
Also, I believe that the only possibility of members going first to you is newcomers. However, this is a high risk to take from you if you re legit because some might chargeback... (even if a MM is used) So idk why you refused vegeta but you should of took his offer as HE wont chargeback.