Delay in allocating my payments

ever since i lost my card last year november i went to the store to block it and advised ill be making cash payments. from 01/12/2014 I have been making cash payments but it seems TEKKIE TOWN lacks the ability to allocate them i have been sending proof of payments on a monthly basis, but you have went on to list me as a bad payer and handed me over to RCS collection department, in january i was promised this matter will be rectified and my ITC record will be updated but nothing. I still get calls i make my payments on a monthly basis. If this is not sorted within the next week i will take legal action against you as you are also making it hard for me to obtain credit anywhere else.