Really gutted for you,I wouldn't be phoning them to see what's going on,you should go down there in person,best thing to do as you said he keeps being horrible,is record every conversation with him or whoever down there,as will be more evidence in your favour,keep pestering them,you could even get one of your mates to film it on there phone or something along them lines,hope you get this sorted will keep a eye on this to see the outcome