Awful service

I want to greenstone mr price last week Tuesday used my store account to buy and pay for the account. Went back on Wednesday to return some of the items and it happened that I didn't have my ID with me but I had the store card wasn't sure if they would assist me with just my card I was there with my partner we got to the till before we couldn't even do any transaction I explained to her that I want to do exchange of 2 items which was a army green shorts for men and a Mickey Mouse shirt for my son and top up but don't have my id the lady said she can't assist me I need to come back with my id her and my partner concluded that we will leave everything at the store and will come back to do the sale once I have my id she gave my partner a blank white paper to write his details. I went back the next day which was a Thursday the lady wasn't there I explained to the cashier that was assist me which he didn't get what I was Saying an assistant manager and the store manager came but I must say they both made me feel like I was lying and crazy how the assist kept on saying the lady that was assisting me will never allow me to leave the store without my ideas she knows her I really don't know what she meant with that I was told to comeback again when the lady is available because now nothing can be discussed my worry is now I am going to be charged something that I don't have here with me and after been treated like a **** and a chancer that manger had no options to give me I left the store with a very heavy and sad heart I hope my problem can be resolved the only chance I can get to go to the store is Sunday and Sunday is far I really didn't get any awesome service