Poor costumer service

Im am so angry over the service I received at Pick n Pay Princess crossing at the hands of a lady wearing a red two piece suit by the name of Anna or Anne.I collected stickers for the glassware competition which ended in August.On the day to collect we were told there are no glasses and we should write our contact details and we will be called.Today I went to find out what was going on as I have not received a call.I was refered to customer care and found Anna.She told me the completion has closed and there were no glasses.I asked who I could take it up with and she told me head office after showing me my name in the book written N/A...not called by...on this date.When I asked what N/A meant she said they called and didnt get through.I asked who called?she didn't know...date?she didn't know...time?she didn't know.So I asked to use store phone to call head office,the consultant asked to speak to Anna and told her they should compensate me,which made the lady so angry and she proceeded to tell me I caused the problem by not answering my phone.When I told her I work in a covid ward and often have to switch my phone off she told me it's none of her business!Boy o boy did I explode and gave her a piece of my mind!I told her she must never disrespect me like that ever...sadly I was so angry I raised my voice at her.She ended up telling me she will phone around and contact me.Customer care is lacking as I feel it is their fault that they ran out of rewards...didnt the count number of people on the page the wrote on and request that number of glasses?I am angry