What should I do if I lost my TM6 Departure Card while extending my Visa in Thailand?

Hi all. I lost my TM6 Departure Card, went to the Pattaya Immigration Office in Jomtien, not a problem because I'm staying in Jomtien, as I wanted advice as to what to do before I applied for a 30 day extension on my 60 day Visa. The girl at the chaotic 'information' desk didn't speak good English so I left none the wiser really except she said to come back 3 days before the expiry of my 60 day Visa. A friend told me about this advice group. I've been reading what to do in my situation, so yesterday I went to the Police Station on the front in Jomtien to get a Police Report. My Thai girlfriend has a Thai policeman friend in her home village. He said to avoid any questions just say I lost it here in Jomtien, and I would have to fork out, probably, 20-50 baht. So, a long post, sorry about that, to warn those of you in my situation using this particular nick that it cost me 200 baht for the Police Report. I was tempted to argue the toss, thought better of it...it's only a fiver after all and the cop was pleasant. My first dealings with the Police here....things I've read elsewhere lead me to believe it's not uncommon behaviour, sadly.