My canary has gone grey

Well, I have to keep quite busy as I do not like to think
I have 59 new credit cards  and I   wash them in the sink
I take each one quite carefully, rotating them in use
Or they may be jealous and accuse me of abuse.

Then I have to pay them off or  they incur interest
Not like handsome men might do when they don’t wear a vest.
Interest is money which the banks demand  be paid
If we spend just pence more than the limit that they gave.

I do it on the telephone so I can have a chat
Sunday is the best, I find, if you decide on that
Enter all the numbers that  run straight across the card
A pity there’s no hurdle and that gambling has been barred.

Also, you must tell them then, just what you want to pay
Make your mind up when you start or you’ll be there till May
And 59 in total is more than there are months  per day
My head is reeling from the bills, my canary has gone grey!