JET POOR SERVICE

I am very much disappointed with the service received. I wanted to do an exchange of the same item I bought. I had however forgot the original slip but had the eft slip to prove my purchase. I was denied assistance by 2 guys & a lady who was very rude told me I had to retrieve my bank statement to trace the transaction I went to the bank which was packed couldn't get a assistance because I was now looking at the time the store will be closing soon. Went back to the store tried to trace the transaction on my bank statement which I eventually found. I showed them the transaction as per their request, but I was told I should come back the following day because they are offline of which was not the case because everybody was now rushing to Cash the tills and they didn't have the time to go through the transactions for Monday. I spent an hour doing run rounds to get the Statement and eventually turned away to come the following day. I told them I'm working and won't have time to come back as I stay far and it's costly for me. According to my understanding the return policy state will gladly exchange should you don't have the prove. I am highly disappointed with such poor service and lack of understanding of the rolling out of the policy