How safe is my information on PnP Smart Shopper?

Two weeks ago I noticed to my dismay that 8 000 points or R80 has disappeared from my balance. I checked my account info and also saw that my name has been changed to Wallace Cele, someone unknown to me but who coincidentally has the same initials to me I immediately contacted the Customer Complaints line, where an apparentally very eager contact agent asked me to send a screenshot of my last slip with my then-balance.U did that and she said she would send it their tech division and get back to me. After a week I tried contacting her again by email but to no avail. I then spoke to another agent, who promised to look into it and get bsck to me the same day. Needless to say, that did not happen either. I am very concerned about the apparent identity theft on my card - a concern not shared by PnP. I want my points back and an explanation of what happened and an assurance that the breach has been addressed.