TV license harassment

I have been bothered from the beginning of the year to pay my TV license. Now I have paid it couple of weeks ago and there are still messages coming in to my phone asking me to pay for the TV licence. I have emailed the proof of payment to *** as well as MBD attorneys who later sent me the proof of payment via SMS. However I still continue to be subjected to harassment regarding the outstanding amount which I paid on the 14 June there about.