Appalling customer service at PEP Jackal Creek Cnr

My husband & I visited PEP Store Jackal Creek Corner yesterday (10 March) afternoon at around 17:30 to buy tracksuits for our 7-year-old daughter for her to wear them on Friday. My husband went into the store and I stayed in the car we parked right outside the store he was assisted by Ruby. As soon as he was done paying he brought the tracksuit to me in the car when I checked I realised that even though that are the right size they would not be the right fit so I said we should go back in and get a bigger size maybe size 8 - 9 this was at least 5 minutes after the purchase, we went into the store we told them we'd like to exchange this for a bigger size they said ok look around for the size you want, we did and we couldn't find it. So we opted for a refund, Ruby asked for a receipt we looked for it in the plastic bag where Ruby herself had packed the tracksuit it wasn't there I quickly ran to check in the car which was just outside the store and it wasn't in car, my husband then realised that Ruby never handed him a receipt and he never asked cos he assumed that Ruby packed it in the plastic bag with the purchased items. So to save time we asked Ruby to contact other PEP stores to help us find size 8 -9 and have it IBT'd it to Pep Jackal Creek Cnr so we can collect it at their store, i wrote down my phone number on a piece of paper or she must take the small tracksuit back and give us a voucher instead that we can use at a later stage at PEP store should we find something suitable there but she told us (1) she was going on leave the next day (2) PEP doesn't do IBT (internal branch transfers) and that (3) they don't have a relationship with other PEP stores (4) they don't issue out gift vouchers it's against PEP store policy (5) and that we should leave the store as they need to close. At this point it was Ruby and her supervisor whom when i asked for her name she said THAT IS ON A NO NEED TO KNOW BASIS.