Food*****s and Telkom's Poor service

Yesterday the 3rd of March I purchased R250 rand 8ta airtime from Food *****s at N1City and when I was going to load the airtime I saw that the receipt had a line with no ink therefore I could not load airtime. I then called Telkom Customer Service and the gentleman told me that I should give him a serial number but I couldnt as there was no ink on the receipt. I then went back to food *****s to ask for the serial number at first I was told there is nothing they could do I must guess what the numbers say. The Manager Wonga then went to reprint the receipt but only the serial number appeared. I then called telkom and I was assisted by a very rude consultant who has no customer service etiquette. Her name was Samantha Andrews. She said that my airtime voucher was still active and that they had no authority to give me airtime as her manager is not around. I then lost it and instead of empathizing with me as a customer she told me what not and what to say. My issue is still not resolved and I still have all the receipts.