Unlimited data plan not showing in sky piggybank

[FP393]

I'd like to use my unlimited data plan occasionally for piggybank rollover (approximately 5gb  for one sim and  2 gb for the third sim). I can't see my unlimited plan to use it) all sims are mine and under my contract. 
How?

Thanks

[GD1]

@FP393  The unlimited data plan does not roll over data, that's simply not possible as your not capped on data usage so there is nothing to add to the piggy bank.

[lettice]

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@GD1 wrote:

@FP393  The unlimited data plan does not roll over data, that's simply not possible as your not capped on data usage so there is nothing to add to the piggy bank.

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True, the unlimited plan will not obviously roll over data.
With the unlimited plan, you do get some Piggybank data added to the Unlimited plan as an initial welcome bonus and sometimes an additional bonus offer.

That piggybank data can be transferred to your other non unlimited sims on your account or used as rewards towards devices and accessories from Sky mobile.

As above, what you  cannot do is transfer piggybank data from another sim on your account to an unlimited data sim on your account.

[FP393]

Thanks. I was told I would be better off having an unlimited plan and the other 2 on minimum to keep my costs down. I'm gradually moving over to my new phone but activating extra security either crashes the new phone or will not go to the next steps. So I have to keep going back to my old phones.