Poor service

I have a Vodacom business contract for 4 years now,but am very disappointed with their service,especially with the second line Lte,I have lost my lte router and asked Vodacom to cancel,I truly failed cause I am paying but not using it it's been 2years now,I even wrote letter head,looks like they only enjoy taking my money for nothing, here are the contract details P*** Solution Name ROUTER Description Business Internet LTE Promotion(01/06/2025 -30/06/2025)Non Recurring 0.00 Recurring260.00TP Link MR600Business Internet LTEBI LTE AccessBusiness Internet LTE 30MbpsDynamic IPUnBusiness Internet LTE PromotionAmount excluding VAT Discount Total Sub Total VAT at 15% Totals 0.00 0.00 0.00 0.00 0.