FSP with no facility to cancell lost card!!!

Went into MRP sport in retail crossing Roodepoort, while shopping I had realized that my card was no longer in my pocket. Immediately approached the store manager, who was extremely helpful and tried to assist in canceling my card. With no luck, we realised that all call centers were closed at 15:00 on Sunday with no facility to now cancel my card!!! This is unacceptable MRP!! I will not be liable for any funds spent on my card as you request us to cancel the card immediately yet you do not offer the facility to do so, only at times that suit you! I would like a copy of your complaints procedure as this is not acceptable! I want my card cancelled as a matter of urgency and an explanation of what procedure should be followed in these situations! I really expected more from an institution of your size!! I am never requested any type of ID when purchasing on the card! I had to go to the lengths of requesting a written letter from the store manager as proof that I had reported my card ******! Very professional!!