failure to exchange merchandise

I reported at the entrance that I bought the pants at truworths kolonade on 28.11.2015 and that the size is wrong so I need to change it and get the correct size.Nkosinathi showed me where I can find the same pants so that I select the correct one.i didn't get it so I chose another one and took the belt as well.When I goto the counter they told me that they can't help me because there is no track record for my account since I did not bring the slip.They told me that the last time I made a purchase was in Aug 2015 and another is their system is mot updating information on my account.I did not get explanation on how truworths determine my installment because every month the debit order is going through.I felt very offended when Nkosinathi said Samson at the truworths Head Office said I must come back on Monday even though their system hasn't been updating my information since August.I travelled more than 60 km to get to truworths and receive this treatment. In this case I guess truworths is playing a robbing game against its customers if I'm not the only one experiencing this and I have to part ways with truworths after 19 years.Im deeply offended.<br>