Pathetic Customer Service

I used my card on 07 Oct - and for some reason the payment went through twice. Deducted from my card twice - SAME amount, same store. I contacted RCS CallCentre on the 12th to report - Received No reference number for the call. Spoke to Leanne from Merchant Services. They are "working on the problem, a few accounts were affected by the glitch". Sent EMail the 15th October - no response. Phoned 17th October again - as my monthly statement now show the 2 transactions where it should only be 1 transaction - unable to choose an option to be routed to the correct department. But RCS will phone you on the 26th of every month to "just remind you to pay your account" - mine was NEVER paid late... But when you need them to assist in resolving THEIR mistake - no way of contacting them.