Poor service at vodacom

Me and my husband took out a contract with 2 Huawei p30 lites. We are getting suck weak service from them. I phoned them to find out what the bill is so that I can pay. They tell me they can't give me that info over the phone. You can get that info online also. You must call a number and that number can only be called from a Voda om number. Which we don't use so don't even know the number. And today I went in to the branch at cape gate. The women told me she can't see when my bill will be deducted. I got so upset that I said a few things. 1 min later she told me the date. How? I want a consultant to phone me and tell me all I want to know. You can't even leave a complaint anyware. Only helloPeter it seems.