Harassing phone calls.

My husband has 2 cellphones on his name. One is his and 1 is mine. Cell c has been harassing me on a daily basis wanting to speak to my husband. The more I inform them that they need to contact him on the other number the more they phone me. I mean 3 times in the last 6 minutes! I am at work and my phone ringing constantly is not going down well with the employees around me. I called the call center to ask them please please contact him on his number, stop calling me. I was informed by the operator that they need his consent to stop phoning me!!! and if I want to I can just ignore the calls. Are you guys serious! This is harassment as far as I am concerned. If Cell c needs his permission, please use 1 of your calls that you were going to use on me and phone him. We will most definitely not be renewing our contracts which we only have 2 months left on as your customer care sucks!