Accussed Publicly of *****ing deposit envelopes

i went to collect deposit envelopes at Standard bank Park Station and the Sbv Guards said that they loaded the envelopes and that i am *****ing them i then went on to say i had a business and i needed them .they told me to use my common sense and that i am a ***** they will call the police on me and have me arrested for *****ing and that i must take one envelope a day .i then asked if this is the case why there is no sign saying that .they continued to call me a ***** with no common sense publicly this was all being recorded .This is defamation of character