UPDATE
After the initial customer service resolution was not satisfactory, we explored our options and we made use of our rights under the "arbitration agreement " which could be found under under.
https://www.microsoft.com/en-us/legal/arbitration?SilentAuth=1&wa=wsignin1.0
if you are in the US , you have to first send in "Notice of dispute" giving microsoft a chance to resolve the issue fairly. For us the issue was resolved after filing Notice of dispute and hence we did not have to go for arbitration.
Hope this helps !!
thanks
Balu
Thank you so much for the information. Can you explain more how exactly they resolved the issue? And what was the exact process? How long it took for you to resolve it?