Not correctly informed of the promo

Ref no. *** I upgraded my contract on the 25/06/2021 to another promo. On the 01/07/2021 i received an sms at 4.45pm that my upgrade has been successfully migrated. A few minutes later I needed to make a call and realized that no calls were going out not even emergency calls. I tried rebooted my device 3 times and still it was the same. I contacted the customer service from another device and was transferred to various different departments only to end up at the technical department who discovered that my upgrade was a data sim only therefore all my calls were barred. And at that hour the retention department was closed and only could call in the morning to get assisted. I reported it first thing the next morning and was given a reference number. Upon taking the upgrade I was never informed that the line was a data sim only. My line is a business line and i would have never agreed for something like that cos it just wouldn't work. Since the 01st of July my line is disconnected and its very frustrating. I've been a loyal customer for many years and feel very prejudiced.

I want a reversal of this contract and to replace my line with my previous bundle 30g smartdata top up immediately.