Poor service and communication

I called to take a 600GB deal for R299, and I was assisted well, the problem started when my simcard was supposed to be delivered, it was scheduled forb15:00 but they sent the delivery guys to deliver before 12midday,which I was not at the address at the time, then they called they set it up again for the same time 3pm but came at 11am the following day, and now I'm calling trying to sort out their mess, and my number is blocked because I'm calling too many times, they suspect *****, the refer me to their whatsapp number, and that Tobi is useless, and say I "should call the center it can't assist with billing" , now I can't call to get help cause my number is blocked due to them not sorting out my issue and I have to call to sort it out... Such poor service