Out of country and service suspended

I arrived in Mauritius on 19/3. I received a welcome message from Vodacom which said nothing about data. I came back to my phone a couple of hours later and saw a huge bill for data. I immediately switched off my data roaming. Today I find I have no service probably because of the bill. My problems are 1. I am a high value client yet I am suspended when I need to be in contact with home 2. No indication was given in the welcome message of the exorbitant data charges. I can be contacted on whatsapp and [Email Removed] I need my service reinstated immediately and I need an explanation on lack of warning on high data charges