Security Industry Authority

Hi would like to make complaint against sia security company I've done all my course on sia I passed got all my certificates and letter from sia telling me go and take my ID and payment of £220 pound to the post office so I did its all paid for then they send me a message saying could I send them my group A document i.e driving licence so I done what they asked I posted my driving licence on the 30th of May they still saying ain't sent me any email or nothing there are quick anuff taking my money what made me skint I've done everything I can to get my badge even used my benifit money so I can gain employment it ain't right the way they treat people they don't tell us nothing it's our money all I want is a update of my sia badge so I can get employed I've got kids and rent to pay this is making my life missable