Bad service from pep head office

On the 02.03.2018 I made a purchase of R79.30 and swiped my card, first time the card declined and swiped again only to be charged twice, now today 06.03 went back to store for them to reverse the money and we called their head office, they told us to call my bank fnb, we called they told us to call absa to send authorization and we did that absa gave us Auth number however they wanted pep to send them request to cancel the transaction under business letter head and only HO of pep can do that however they refused and guy also **** saying FNB will reverse the within 7-14 days and his supervisor hand up the call and the**** again saying she is busy. So according to fnb they cannot release the money till absa send them written auth and pep doesnt want to send absa the letter. So **** this store will never buy from again. Thanks to Buyi the branch manager who tried to help.