Flysafair have unfriendly and dishonest people at Port Elizabeth Airport

We had a return flight between Cape Town and Port Elizabeth during October 2017. At Cape Town International Airport the staff at Flysafair check-in were very friendly and helpful, but the experience at Port Elizabeth Airport was totally different. On Saturday, 21 October 2017 we checked in for our flight from PE back to CT at 13h40. Shortly after that we went through security. Unfortunately I made a big mistake by putting a knife I bought at Kloppers, in my hand luggage. I realized they had to take it away, but because I did not want to lose it, I asked where I could hand it in for storage until it could be picked up. They sent me back to the check-in counter and the unfriendly staff there, sent me to the Ticket Sales counter of Flysafair. The lady assured me that they will keep it there for 2 days to be picked up. I asked her to mark it with my name, but she said it was not necessary. I asked my sister who stays in PE to pick it up at that particular counter. When she went there this morning (Monday, 23 October), they told her there is nothing. According to this person, they send everything handed in on the same day at 10:00 o'clock the evening to Humewood Police Station for destruction. Now I wonder who is lying; the lady who helped us on Saturday around 13h50, telling us they keep items for 2 days OR the person who was on duty this morning, telling my sister they only keep items until 10 o'clock the evening???? I will not be surprised if they take the items handed in for themselves instead of sending it to the police station for destruction. SO BE WARNED, IT DOES NOT HELP TO HAND IN SOMETHING AT SAFAIR'S COUNTER FOR SAFE KEEPING!!!