Wrongful arrest

On 20th of this month I went to Shoprite mams square with my kids to do small shopping as usual then when I finish with my shopping the security guy at the door told me that I must pay yoghurt that I drinked at back and I was so shocked I thought the guy is joking aah no he was not then ask him which drink and he said they say they saw u on the camera's drinking something then I ask the security guy to ask them to check the camera's they say they are sure is me because I paid my stuff at till no 10 I told the guy that I didn't drink anything they say I must wait they will check the camera's then after 30 minutes they come back n say they are sorry it wasn't me I want to knw what must I do coz even my kids where shocked n people where watching me like a ***** iyooh