Who / What is Glocell??

One of my Cell C numbers is now managed by Glocell. On Friday 29 April, a simswap for this number was done at the Cell C store Pavillion (the Cell C assistant behind the counter arranged this with Glocell on the phone from the store). I was told that the new sim card would be active in 2-3 hours. It is now 21h35 on Tuesday 3 May and my sim card STILL is not active. I called the Cell C helpline and they said they cannot help and I must call Glocell who don't have an out-of-working-hours call centre. This is simply NOT acceptable.