Rude Silindy - Pick n pay Musgrave

I went to purchase some groceries at pick n pay Musgrave. I saw the coriander on special 3 for 2 and they were reduced as well. I went and paid and then found out the 3 for 2 special did not apply and had to go and return it. Firstly the return wad a long process then a lady Silindy who works there was extremely rude and told me I should have asked before purchasing. This lady should go for customer training. I will definitely be purchasing elsewhere in future.