Hi, I arrived in Yiwu last night and am having many difficulties.

1. I was given a SIM card to use by a New Zealand colleague - he bought the SIM card in Yiwu last month.
It ran our of credit so I asked my hotel (Weisiting Hotel) to assist with top up and they told me the card was 50 Yuan in debt. Then it would cost a further 50yuan to add credit. If this is pre-paid why is it in debt?
Surely I can buy a whole new SIM card with some credit loaded for 50yuan?

2. Laundry: I went outside the hotel and was charged 80 Yuan to clean one small plastic bag full of clothes (approx 2kgs). Is this correct?