My situation was pretty much similar to that of ramromanchey. They used to call me in the day time and I could not pick the phone. Then I realized that if I miss the call then they sent me an email reminding me of the call. I reply them back  regarding my situation and ask them to call during the certain duration of time. They says OK also. Then they call me again at the daytime. This went again and again for more than a week. I ask them to cancel the transaction and that happened so quick. 
Stupid Muncha!