What does 'get hold of' mean?

[Sipa2008]

English Error, Elementary Level

ESL/EFL Test #9 "Sorry, Wrong Number", question 10

Don't worry. Give Anna my best wishings if you ever do get hold of her telephone number.

(a) worry
(b) wishings
(c) hold of

English Error, Elementary Level

ESL/EFL Test #9 "Sorry, Wrong Number", answer 10

Don't worry. Give Anna my best wishes if you ever do get hold of her telephone number.

Correct entry: wishes
The error was: (b) wishings

You have found the error but your entry is incorrect.
Don't worry. Give Anna my best wishings if you ever do get hold of her telephone number.
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Please, can you explain the expression"if you ever do get hold of her telephone number." Thanks. Silvina

[Alan]

Hi,

[Sipa2008]

Thanks Alan for your quick replay. Silvina.

[Torsten]

Hi Silvina,

Please note the difference between the words 'replay' and 'reply'.

Thanks,
Torsten
_________________
Test Of English for International Communication
TOEIC Preparation & TOEIC Vocabulary

[Sipa2008]

Hi Torsten, Thanks for your remark but I've already noticed the difference and the exact word is reply. Silvina.

[Torsten]

That's great to hear, Silvina. Thanks a lot for letting me know.
Regards,
Torsten
_________________
Test Of English for International Communication
TOEIC Preparation & TOEIC Vocabulary