Wait why kena wait for Tenancy Agreement?
Last time I got letter offer got written there must complete renovation do everything by a specified "Commencement Date".

Retail lot for mall tenancy also.

Brother deal between nation also got people gostan, they can still settle it out at world court (ICJ).

Also depending on the term also, on grounds of technicalities the landlord might maintain the stance that TS might have not upheld his end of the deal, hence not proceeding with the rental.
Yes it fucking sucks when the landlord do this kind of shit for whatever reason, but they're the landlord you're the tenant at the end of the day.

In this case all you can do is clarify on what grounds they've terminated the deal, consolidate all proofs & records surrounding their reasoning and initiate legal.
Regardless of how the case proceeds, all the while you're still out of retail lot, red in your balance, still have to pay for lawyer and for them it's just a empty lot without tenant as their legal dept. (already on payroll) attend your case.

Recently read a case where the mall did a 'constructive dismissal' to a tenant so that some new PRC player can come in to rent out the bulk of the floor.

Welp that really really sucks. Hope you got all the technicalities covered mate when they clarified termination is on what ground even after LO issuance.

This would probably a better place to ask:
https://www.jbg.gov.my/index.php/en/services/legal-advice
https://guaman.my/legal-advice-in-malaysia/

Some lawyer offices also provide free / low cost legal consultations, google around. No waste in engaging as many party as possible.
https://tyhlawyers.my/property-and-probate-...ce-in-malaysia/
https://www.lowpartners.com/freelegalhelp/
https://malaysia.themispartner.com/lawyers/
https://chungchambers.com/free-online-legal-clinic/
https://lpplaw.my/about-us/how-we-work/

Hope it fares well.