Complaint -Contract Pricing differ

I went to Vodacom River Square on the 6th Dec 2017 to up grade 1 of my Tablet contracts and apply for a new contract number for a wifi rooter 40GB for amount R299 (was approved) They didn't have any stock for both the tablet and rooter. He will only order it tomorrow the 7th. He will call as soon it will arrive. It will take 3 working days. Monday 11th passed and i heard nothing. Yesterday the 12th at 10:34 I phoned them and spoke to Shia and he said he was on his way to call me my devices arrived. When i arrived he was trying to help me but he come back and said he cant open the save because they were off line and the computers as well. So he apologies and said i must come back today. When i arrived there today he was off and a lady assist me. She went and fetch my devices and come back only with the tablet. I asked her were is my rooter i app**** for it and was approved and there was no stock and he ordered one as well. She went and fetched it and come back and told me the Wifi Rooter Contract is not R299 anymore but R349 and that my application felled off the computer and i cant get it for that price. I signed for the contract for R299 it was approved .... they didn't had the device in stock they ordered it. How can it be that i have to pay R349 per month because i was waiting for a device. That's not my fault or my problem. Then the lady said that's how it works and i must come back tomorrow when Shia is back. I asked her if he was dead then who would have helped me sort this out. She said she would but the special for R299 has expired. But i signed on the 6th Dec 2017 for the special and i took photos of the contract were it states that i was in the shop and sign the contract. Then i asked were is the manager she said the manager is off. i asked her her name and she didn't want to give me her name. She ignored me and said i must pay R150 for the once off fee for the upgrade. I asked her again what is her name she still didn't want to give it to me and she reply she didn't help me it was Shia i said i know ... and I'm the customer and i asked what is her name then she gave her name THANDI.

I FEEL I WENT TO VODACOM FOR THE SPECIAL WIFI 40GB FOR R299 AND I SIGNED FOR IT AND WAS APPROVED. THE FACT THAT THEY DIDN'T HAD A ROOTER IN STORE AND THEY ORDER IT AND THIS WEEK THE SPECIAL IS OVER NOW I MUST PAY R349 A MONTH. THIS IS UNACCEPTABLE ....LIKE I SAID I SIGNED FOR THE CONTRACT R299 I TOOK PHOTOS OF IT TODAY AND IT STATES R299.

I WANT IT FOR THAT AMOUNT.... I SIGNED FOR THAT AMOUNT.... IT WAS APPROVED FOR THAT AMOUNT.

Now Thandi said it fell off the computer and the special is over. Who's problem is that ...not mine if they don't have stock and have to order it.