Form broke after strange submission

Hello,

My form broke after strange submission on my website, as you can see below the fields are filled out in a strange way, I was wondering if there is anyway this kind of behaviour could break the form?

Requested start date – 10121985
Duration of Stay – 14
Name of Principal Hirer – JimmiXS
Contact e.mail address – redacted, do not post emails in these forums
House Number – CWKeZYBwE
Street Address – gbRFTqQTehBEt
Poste Code – 6274
County – Avon
Contact telephone number – 36649557929
Number in Party – 3
Number of experienced boaters – 3
No of Toddelers – 2
No of children 44 –
No of chidren 66 – 2
No of Adults 88 –
No of Adults 110 – 1
No of Adults 154 – 2

Thanks,
C

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