Very poor service

What a ****ty company. Reading all the poor reviews is saddening. I purchased a pr of shoes at MrP Cape Gate on Monday 12 Apr 21. I paid with my debit card and the payment appeared on my cellphone as reserved for payment which is normal when the destination bank is not the same as the one paying from. The machine malfunctioned or the assistant was not properly trained and no receipt was printed. The assistant then decided that the payment would be reversed and would not release the shoes. After the payment was cleared in my account I returned to collect the shoes and was told I needed to supply my bank statement. Is this how they collect banking details? what for ??? They obviously don't care. Why are they still in business?