How to create custom scheduling

hello sir,

i want to send automatic send message on behalf

for eg.

Name,sk
Mobile,9999999999
ProductName,Inverter
Warnty,12 Month
Warnty Cyle,3
Date,12/12/2014
i have sms api then i want every 4 month send autometic send sms three time,

plz help me any idea

thanks
Shailendra