Bad Service and unanswered questions

I purchased 1 gig of data for my laptop on the 03 December 2017. I normally give the assistant my number and they load the data for me. I asked the guy to check if the number was still active as I ahd not used it for a couple of months. He checked it and said it was still active. 24 hours later, the data was still not loaded. I went into the store and they checked the number and said it was active and could not help me. I tried again and called the customer care number on the 21 December after weeks of frustration and running around. Customer care took 19 minutes to tell me the number is active. This call cost me R20.00 because my cell phone cotract is with Cell C. They too told me the number is active. On the 22 December after many attempts to get help and trying to log onto the internet all to no avail, I went in to a Vodacom Store at Cape Gate Mall Cape Town. I was then told the number had been deactivated a few months previously as I had not used it for a few monthes. They told me they cannot refund me the R149.00 for the data and that the number has been alloated to someone else and that I had purchased data for a complete stranger. This is TOTALLY unacceptable. When I purchashed the data and when I called and went in to the shop I was told the line is active and then 2 weeks later I was told it is inactive. I had to buy another SIM card and RICA that number. It took FIVE DAYS to activate the new SIM card and when I complained at the store I was told they can do nothing about it. In all the whole experience and assistance or lack thereof has left a bad taste in my mouth. I expect a refund