MTN useless customer service

I'm really disappointed in MTNs customer service. On Sunday the 28th of October I left the country and called customer service requesting them to activate data and international calls roaming. When I got to Kigali, the services were not working. Saturday the 3rd of November when I landed I couldn't make calls or go on the internet as I didn't have connection. I called MTN customer service using a vodacom number numerous times meaning I had to use a whole lot of airtime and still no help. They just took me from pillar to post. When I asked for their supervisor they told me that they were not on floor and I had to call back 30min later. When I did still they were unavailable and took my details but they never called back. I eventually on Sunday the 4th got hold of a supervisor who gave me a reference nr and said he would be escalating the query. I was told that I would get response withing 72 hours and he put an urgency flag on my query. I still have no coverage to date the 7th of November