Crossroads — Annoying Calls everyday

I had a crossroads membership a couple of years back. Once my membership expired, I did not want to continue, however, the company kept on calling me everyday, at times thrice or 4 times a day to renew. I asked them to delete me number and not call me but they keep on bugging me till date. I spoke to their managers and asked them to not call me but this company is so shameless that they continue calling till date. Never ever should anyone take any membership from them. Else they will keep on bugging you perpetually. Worst customer service. They are so shameless, you do anything to them, they wont stop calling you ever.