ME&YOU MOBILE AT IT AGAIN

Please can someone help me. Me&you Mobile are now bullying me;

After months of virtually receiving no service from them but getting their Money, i eventually cancelled my contract with me&youmobile. Barely a month later they sent me an email to say if i do not return their router they would charge me R1800 and and admin fee for a damaged box. But I am a clever girl. I made sure i took pictures before sending it to them with a courier they provided but i had to pay for. a few weeks pass by and they say to me the router was damaged and i need to pay R1911. Me and you mobile then proceeded to take money from my account. i called them and spoke to one of the staff who had no answers for me. he said I NEEDED TO PROVE THAT THE ROUTER WAS NOT DAMAGED. i sent pictures and today they are still demanding that i pay them the money.... get this...so as to AVOID AN INTERRUPTION OF SERVICE?!!!!!! Which service i ask????? the service i cancelled??? am i paying for cancelled services?? or Services of deviously getting money from people ????!!! Someone please help me expose them.

I have pictures of a solid router i gave the courier guy. M& yo Mobile have continued to bill me for services that i no longer benefit from. Infact, they owe me for billing me for wifi from March to May that i never received. Someone please help. how do i stop these Guys!!!!!