Truworths Alberton

I sent my sister today to go and do an exchange for me today at Truworths Alberton. All of a sudden they unable to assist and want me as the cardholder. It's not my first time sending my sister to do an exchange. All the other times she was assisted. Now out the blue it's a problem!!!! She took the exact same products, same amount. It's not like I sent her to buy on the account or there was a difference... It seems like rules change over night at Truworths or their staff are not on the same level or there is lack in training. Than the manager!!!! Has the nerve to give my sister ATTITUDE!!!! What the hell happened to respect! or customer service. I have been a very loyal customer to Truworths not once have I missed a payment!!! But after today I am thinking of closing my account... If their managers can treat customers like that what are they teaching general staff?????? I am very upset customer just for the fact that there is no consistency!!! One moment you can send someone to do an exchange next moment they are looking for account holder and unnecessary documents. Funny enough it was said they need my ID document but not once when I as account holder was asked to present my ID document..... Highly disappointed!!!!