From a consumer view point, the arrangement MR makes with her partners do not concern me. Consider this similar example, if I enter in an agreement with a renovation main contractor to renovate my house - I'd really don't care who he asks to do the parquet floor. Failing to deliver the parquet floor is his own loss of credibility.
The analogy - while *sounding* correct - is unfortunately inappropriate. In this case, the renovation main contractor is FORCED to select the piling company (OpenNet) that is an arm of his competitor (SingTel). Consequently, when the piling isn't done on time (OpenNet), the civil works company can't get started (Nucleus Connect), and the renovation contractor (MR) can't do very much about it other than raise it to IDA (which has been done enough times by all RSPs that compete with SingTel that IDA fined OpenNet in Q4 2013 for failure to meet their service obligations).
Where the renovation contractor has failed you - in this case - is in offering acceptable alternatives given your circumstances or even publicly apologise in this forum.
BTW, if you have a StarHub DVR, you probably have 2-3 mbps free through its LAN port. Check. It's a small amount, but something's better than nothing, and it's likely to be free, and free is a whole lot cheaper than whatever your LTE bills will run to if you use your mobile phone to tide yourself over...
