Appalling service from Vitality

Since I have joined Vitality I cannot activate my Vitality Active Rewards. I have reported this to Vitality on numerous occasions, but every time I call my complaint gets escalated and nothing gets done. The last 2 times I called I threatened to go to Hello Peter if I was not assisted... nothing. Today I was promised a call at 15h30, it is now 16h30 and I have not had that promised call. I am losing discount and points on everything. I've just called customer care again, I asked her to put me through to a manager and she put me back to the switchboard. Please get back to me with a solution. My next step is social media.