Violation of my CPA act 57,58 right, with no valid reason

I am writing this shaking from anger, today 16.08.2020 I went to Hifi Corp in South gate Mall to rerun a pair of JBL T110 BLACK, I was assisting by Noma. Date 25.05.2020 I had went to return a the first set of JBL same brand and make with the same problem, Noma and the manager had signed my receipt proving that I had come however a new receipt was not given however a new set is what I walked out with, now as I went back today to return the set I had received on the 25 may, Noma refused to assist me stating that she does not see the date in which I had first bought my first set of ear phone, On The receipt it states the date and year (2020) in which the earphones was bought just not the month , Considering the fact that had lock down in March /April, the receipt that I had stated that I returned a pair on the 25/05/2020 she was just going to search using her system for the 2 months prior the lockdown which is January and February , Noma Looked at me dead in the fact and told me that she will not be doing that, even thou the elimination would have not been complex because we had the date and year and other information on the receipt that would have been used to determine and compare, she said Hell no and that I should return when the manager was there, going there in a Sunday was convenient for me the fact that I had to be inconvenienced the money that I has to spend to go and seek assistance and be refused services as a paying customer is just beyond me. A violation of my right CPA act 20.1, CPA act 56. 2 (A &B) and CPA act 57 on grounds that I could not understand because my receipt states that I am still within Warranty not only that for that fact that on the 25/05/2020 I returned the earphones and she signed stating that I had returned them does not make any sense. Noma informed me to return did she even think of how this is going to affect my pocket having to come to the mall requires money because I use public transportation to go to the mall, what will happen if I get there after work and the manager is not there will I receive the same treatment to be told to return again with out being compensated. When I left HIFI CORP I was angry because I noted that Noma did not consider how I had to get there, I would like to be refunded the funds I used to go to the South gate Mall and a full refund for my purchase, I would like to get a pair of new ear phones from a different store without having to deal with a service like Noma from the South gate Mall Branch.