Appalling customer service - 2 years and waiting!

For almost 2 years, my phone keeps 'running out of data' even though there is plenty of data on our shared family contract. No restrictions in place and no reason to run out. Every time I contact Telkom they say they can't see a problem and close my ticket. This must be the easiest job in the world - "no problem our end, try turning your data roaming on" and ticket closed. I am left with no data for 2 weeks of every month! I have emailed, phoned & used social media. DO BETTER TELKOM MOBILE! If it is a complex problem, call your customer and do not close the ticket until the issue has been resolved. Standard practice!