Loyal Consumer Disappointed Again

Good day,<br> I was recently made aware that I needed to buy a 3gig bundle in store for it to be valid for 365 days. I was a month ago in Durban on holiday and went to the cellc store in Chatsworth Center, to purchase the above mentioned bundle. I told the sales I wanted a 3gig bundle valid for 365 days, and I paid for it and he proceeded to load this on my phone. Shortly after he loaded it, I got an SMS informing me of expiry within 1 month. I informed the sales rep about the SMS and he phoned his manager who informed him to tell me that it is fine and that the data they sell is only 365 days validity. However in exactly 1 month, the DATA cut. I phoned customer care and they informed me that they cannot see the bundle online and I must phone the store. I am a loyal customer for years now, and I expect quality service. I do not expect for such mistakes and for me to run around due to it. This is the second time I am having issues with this company