[Grammar] Tense concordance

[Fullblooded]

I'm uneasy with a sentence I happened to use lately. The sentence is:
«How can I be sure that I'll get my refund if I withdrew my claim?»

Is the future («I'll get») correct? I don't see why it wouldn't be. Or should I prefer: «...sure that I would get (I'd get) my...»? It sounds awkward or stilted.

My real problem is with «if + ....». I won't withdraw my claim. It's not a possibility.
So it's not like saying:
I'll get my refund when/if I withdraw (present) my claim. I'll get my money when/if I go to the bank.

So I wrote: «if I withdrew». Like in: I'd be happy if I won 1000$.
But is it correct after the future «I'll get»?

 

[Rover_KE]

Welcome to the forum, Fullblooded.

These are correct:

'How can I be sure that I'll get my refund if I withdraw my claim?'

'How can I be sure that I'd get my refund if I withdrew my claim?'

 

[MikeNewYork]

I would go with Rover's answer on this one.

 

[Tdol]

It depends on the context, which is not given. Has the person already withdrawn their claim? If so, then Piscean's statement works. However, and more likely to me without more context, if this is not the case, there is a problem and Rover's sentences are correct. In this case, it is a question of the probability of withdrawing the claim- if it is reasonably likely, then wlll/withdraw is right, and if it is unlikely then would/withdrew is correct.

 

[Fullblooded]

All these answers are very enlightening (and enlightened while I'm at it). Thanks to the three of you.
The context would be: I can't withdraw my claim, because, should I do so, I'll lose my bargaining power. So I won't withdraw my claim.
I guess I should have said more correctly:
'How can I be sure that I'd get my refund if I withdrew my claim?'. Or maybe: 'How can I be sure that I'll get my refund if I should withdraw my claim?' would've reflected more accurately what I had in mind. I'm a HUGE fan of all these intricacies. What do you think?

 

[MikeNewYork]

"I'm a very fan" is missing a word. Do you see it?

 

[Fullblooded]

Thanks. I edited it.

 

[Polyester]

Welcome to the forum, Fullblooded.

These are correct:

'How can I be sure that I'll get my refund if I withdraw my claim?'

'How can I be sure that I'd get my refund if I withdrew my claim?'

withdraw= present tenses?
withdrew=past tenses?

 

[Tdol]

withdraw= present tenses?
withdrew=past tenses?

Tense not tenses, but otherwise correct. ;-)