s6 edge worked perfect untill two weeks ago

about two weeks ago when we had that weekend of rain and it was so cold, thereafter my phone does not get signal let alone the 4g I am supposed to get. after much frustration I decided to call the call centre and the first guy intelligently picked up that the network mode on my phone was not set to 4g. so I changed it to 4g from WCDMA/GSM(I did not change anything my phone selected WCDMA/GSM on its own), the guy also mentioned that he will get back office to synchronise my device with LTE and asked me to put my phone off for 15 minutes and restart so I did and nothing changed. so I called again once home after having to go to the back of my house where I get signal in roodepoort(1724)(this never happened before). so I called and she said I must get 5 other numbers experiencing this problem(this is not easy) but then I realised I also don't get any signal where I work in randburg, I don't get signal anywhere so I realised that Vodacom likely is not sending a signal to my phone. I am prepaid an I spend R800.00 per month on data an have Samsung s6 edge an everything was perfect until two weeks ago, I am angry an I am a platinum client an looking at changing providers because this bad