Rude employee parks me in at Chamberlain hardware in Pretoria.

I went to purchase som items for my kids scout camp at Chamberlain hardware in Rietondale Pretoria today. I parked in an unmarked bay. When i returned to my car i was parked in by a silver bmw reg XRY692GP at 4 pm on the Chamberlain Street parking. A kind employer called security to help me. Mr Alpheus Namane was very fast and found the owner of the car who accused me of parking in his bay. I pointed out that i was a customer and the parking bay was unmarked which is why I parked there. I also tild him that I was very upset as my two young kids were waiting at school and it was raining heavily. The male employee who had parked me in refused to give his name when I asked for it. What a terrible experience I had. In future I will definitely not be spending my money at Chamberlain hardware in Pretoria.