It also happened to me. I received SMS from Hotlink since mid May 2015 and they expected me to use my few hundred SMS Bonus wallet within days while I have exchanged this SMS with their reward point by credit top up plan. To me, this SMS is still credit to me and should have no expiry date as per their original terms and condition during the reward plan. I have being following up with them over calls via 123. The last reply from their CSC Manager ensured me that this SMS have no expiry date and it won't be wiped out. To my dismay, it has been wiped out on 1/7/2015. I am going to report to SKMM and Consumer Association. Any affected user, please do the same.