Am so disappointed

My boyfriend bought me clothes on 14/08/2018 at Jet westgate as a surprise gift. The clothes dont fit me and he lost the slip.he is a foreigner an does not know he needs to keep slip. The clothes are in a good condition, tags are still on the clothes, never wore them, and I requested for exchange at Jet Carlton- center they refused. In many stores as long as the items are the same way they were bought they exchange like..Ackerman's and Mr price. So I did not expect such from Jet, am unhappy and disappointed as I have been a jet happy client for 7 years now...the Assistant Manager Thandi didn't even show concern they had to look for her for the whole 7 mins, I asked her to call customer service so that I voice my complaint and she kept on saying the phone is cutting for the whole 15 mins then the next thing came back to tell me they are closed. After I wasted my time for the whole 30 mins. Im not even angry Im just disappointed.