Parking ticket

I would like to bring to your attention the issue of parking tickets. Recently on a weekend, Friday at 7:00pm I went to Gulshan 2 and parked behind a building in front of Lavender Shopping Mall. I have been going there for a long time and have never been charged for parking. However, this Friday two people came up to me with a pink slip and tried to charge me Tk 10/- for parking there. I had a look at the slip and it had no registration number of DCC on it, nor was there any ID cards on those people. They told me the name of their company. According to the ticket collector they had been given this job outsourced from DCC several months ago. I queried about their registration number but they had no answer and told me to contact their boss.
Again when I went to park in front of Coopers, in Gulshan 2, another person from the same company came up to me and wanted to charge me Tk 10/- for parking.
Now I am not averse to paying parking charges, however there are no facilities for parking, nothing for the extra Tk 10/-. On top of that, how am I to know that this is not a swindling of some kind. And moreover, all over the world parking is free on weekends after 6:00 or 7:00pm, at least it is so in some places in London.
I would request The Daily Star to investigate this matter and bring it to the publics attention. We do not know if the DCC really gave such a job to this company.