If you ever call me or send me sms about the account I will take action against you

I would like to lay a Complaint against TFG TOTAL SPORTS I've been receiving sms that I must pay the account which I don't have with them and they've been phoning me non stop and I've been telling them they got the wrong number because I'm not the person they looking for ,I'm not MR I'm a woman .please stop calling me otherwise I will sue you for the harrasment you give me,I'm fed up with these calls because at work we not allowed to use cellphones and you phone me non stop, please look for the right person