Ebucks! Why have rules if u chnge it all the time?

After logging complaint after complaint since your rules change 1 July you keep getting the points allocation incorrect and I lose out on my ebucks reward level points and ultimately my ebucks. I keep getting told this will be sorted on the next run and the next run is always a month later. After that you make another mistake. First my global account points then my device points were not allocated, then my international spend was not allocated, Month after month im going to my fourth month where I cannot plan my spend of my ebucks. The other issue is you cannot change the rules if you have me sign a contract on that basis. Imagine I say I do not want to pay for the contract any longer. If that was the case then it would be ok. What compensation is there for all the time and heartache spent on this? From My broadband I can see Im not the only one experiencing this?