The worst service of my life

I have never in my life ever had such bad service as o have received from universal. I called through to the call centre about almost two months ago and put a claim through on which Mariska DuPlooy assisted me with she never got back to me I sent countless emails I called and left countless messages for her to call me back but nothing. I was also told her manager Yusuf would call up until now still not I have all the proof on my mobile of how I have been calling and calling an emailing begging for assistance even emailed their complaints department but also with no success, bearing in mind I am on maternity leave and have no money I have to borrow money to get airtime to call and data to email. I seriously have never experienced such bad service ever. This was really my last resort as I called today again with my last airtime and still no luck. All I ask is for someone to assist me.