Can you please assist us we’re lost

Total sports maponya mall,I’m stuff member i went there to buy some stuff for my son with Moretyme they did help me and I got the size.When I get home I found that it’s to small I try to go back and found another size when I get to the till the lady says we are not using the Moretyme while you a staff member,I like to know that it’s a real thing because I pay with full instalment I was very engry because it was a last day my son was going with the school team afternoon