Spam Calls

So I have a One Plan Pet Insurance policy that covers 2 dogs. I have had this policy for 14 months. my payments are up todate and yet today I received numerous calls from them on 5 different numbers. I did not answer any calls because I have been in a meeting but I attempted to call them all back only to find all 5 numbers belong to One Plan. I then sent a message via there WhatsApp help system and spoke to a Nompumelelo, who said she cannot help me, when i mentioned Hellopeter, she apologised and said they take this concern of mine very seriously blah blah blah blah. It is absolute nonsense that they spam call me all day on numerous numbers when my policy is up to date, and by the way, I am spending R1250 per month on pet insurance so to date I have spent +- R17 500 with One Plan, I have had 2 or 3 small claims but One Plan are making good money out of me and then they spam call me, No Man.