Cotton On cheats its customers

Went to Cotton On Sunday Sandton City. Bought a shirt and beanie. When went to pay was charged R99 for beanie when price tag was R69. On the shirt was charged R299 when the price tag was R 99. This amounts to a 200% cheat price! How many customers is Cotton On ******** with incorrect pricing and unsuspecting customers? When complained excuse given was IT systems not updated - this is an unacceptable excuse for a retailer! Rather than refund purchase amount was offered to spend more to make up the difference. Cotton On get your act together - you won't be getting my business again. I would rather spend my money with an honest retailer not some rip-off artist