ATL is not only contractor for AHPETC but also for a number of PAP run TC as well Govt agencies. i think these guys were thinking of getting a cheaper quote using the PAP name but did not realise that no company with brains will provide different quotes for rivals for the same event. It would suicidal. These kind of antics you see in Condo management where some residents will purposely seek a lower quote to undermine the council.
Your source is interesting but this part may not be accurate. ATL is a contractor for AHPETC and both are unlikely to come up with competing quotes. If there was a request, AHPETC can direct people to ATL. AHPETC does not issue quotations as it is a town management body and not a business.
If such a thing was true, it is more likely that the sycophants requested for a quote from ATL and then requested for quotes from other cleaning companies to show that AHPETC does not do a proper tender process. In the end this angle was not surfaced by the sycophants because either
1. ATL turned out to be cheaper than other companies
2. This issue surfaced, so they wanted to hide the fact that they requested for the quote and also ride on the new angle instead
3. They realized ATL is also contracted by other PAP TCs
Just speculations.