Unprofessional service

My husband and i went to Ackermans at Boardwalk inkwazi mall in Richardsbay(19/05/2019) to buy 2 phones (Mobicel H1 and a Trend A4) we stood by the cell phones with no-one to assist us. I eventually decided to go ask one of the staff members if we can get help. We waited for over 15minutes for our cellphones to come and the store was not busy at all. When the cellphones came the ladies at the till were laughing and mocking our mobicel, Slindoh and Ntuthu. Slindoh asked my husband and i to pay at different tills for the phones and i asked why since we were using one card to pay and she responded with an attitude asking do we want to stand next to each other while paying which i felt was very rude and uncalled for. Please teach your cashiers/staff on how to assist customers. We don't visit your shops to ask for favours we pay money there's absolutely no need for your staff to be rude to us