Appalling customer service from the assistant mana

After shopping for linen at Boardmans, payment needed to be made. The card was swiped and payment went through on my card as per an sms i received from my bank, it said the transaction was approved but a slip didnt come out so i could not sign. the teller apologised and mentioned it was her mistake but it was approved. She said she had left the card in the slot too long. She goes to get a manager and returns with someone of ill manners and a bad attitude. additionally, she did not understand wat she was explaining about the mishap. She then began rolling her eyes, throwing her arms around, being condescending, addressing the teller and not myself and eventually proceeded to raise her voice, express her annoyance at myself with her impatient reactions and speaking over me. She then suggested that even though i saw the payment go through, i should leave the store without what i had paid for, but could not reverse payment as the accounts department had knocked off. She THEN suggests i leave my card number and details, which i found highly inappropriate. i felt i was dismissed, yelled at and handled by someone unsure of what their job is. i am disappointed & returned everything.