Store ahs no cash for refund. Please pay back my money

I bought a chain online and paid via cheque account.

The chain firstly did not match the size specified.

so I go to the Sterns in Northgate to return the item as per the returns policy on the website.

I get told that I cannot get a refund as the store does not have cash.

How does such a big chain an store not have a cash float? if this was my store I would be embarrassed.

I tried for 2 days now calling the store who still does not have cash.

I called Customer Care and Online Customer Care who the most useless departments I have come across, i was transferred between departments with no help.

Eventually I was told the other option is to return it back to the online store however I need to pay for a courier and also wait 30 days.

All I want is my money back