Chased away from the bank because of depositing coins

I have never been treated like this at any bank I went to Capitec in Korsten Harrower Road with my coins and I was chased away because I have too many coins the cashier told me to count my own coins his name is Sean and was assisted by Thuli who was on the phone and chased me away also. When I left my house I knew how much that was now they told me they can't help me with so many coins I must go count them myself and separate them. The treatment I received was very unfair and he kept on saying 'Sir' sarcastically to me