Harassment calls from MBD

The company is for ever hurusing me with calls. I have an account that is with them I made arrangements and paying with no fail but they won't stop calling me. Today is woman's day and 1st call is from them. Who is now suppose to pay for these calls daily. A person can't even think properly becouse of your harassment. It doesn't matter even if you answer their calls you will still get more calls in one day. Your dialler system is very bad.