Please serve the company with honesty and pride

ON 15.01.2016 at 17:14 i entered the service station to buy a pie upon my arrival i found out there is combo of R27.40 for both the pie and cold drink realizing that i will receive a voucher to buy at Jet.I went to the counter and pay assisted cashier Lindi only to be given a payment sleep and she took the voucher just in front of my eyes.I ask her about the promotion on display that i shouldn't recieve the i should receive the voucher all she said was that competition is closed and laughed at me like a fool,I did not question further i just walk out of the store as i was hurt that an employ who was hired to serve the customers with trust is doing that to a regular customer.Guess what on Sunday 16.01.2016 i went back to buy my two copies of paper and ask fellow colleague about it she said it is still on but when i tried to explain what happened the other day she was not interested.I tried to phone the store several times but the phone just rings unanswered as i obtained the number on the internet.I am very disappointed with this and very angry i need some answers from management please before i escalate this matter further as i still have proof of purchase.