if u have signed contract and MIA, if they want to pursue the matter, u will end up with a lawsuit and not only that u might be fined and your name will be well known in the industry.

now is rm2k, later rm4k, and the longer u drag the more u pay for interest and misc ;-) end up you work to pay them ;-) do not think u can run away.

u have to go and talk to them, u can ask for installment and even get a discount, i believe they will accept if u are sincere.