Loyal customer turned extremely disappointed

I would like to log a formal complaint against vodacom.The 12th of August up until today I have been having issues with my internet from after 19:00pm. I have been trying to contact them on the 15th with no answer at the contact center, I have tried calling them on the 16th while holding the line for 45mins without being able to speak to a consultant. I am extremely unhappy with the fact that I do have data but I'm unable to access anything on my phone. I do rely on what's app for a number of reasons and feels that if there is an issue a text message could be sent out to everyone to inform us. This is seriously unprofessional, coming from someone working in a call center might I add. I have been with vodacom for 12 years and always considered moving, due to them being the most expensive but always remained loyal because of their great internet connection.I would like an explanation about why this has happened and how long this will be continuing in order for me to decide if Telkom would be the best network for me moving forward. Thank you Simone van Diemen