WRONG SELLING

I am writing to formally dispute the excessive charges recently app**** to my two cellphone contracts. At the time of signing these contracts, I explicitly requested limited data packages because one of the lines would be used by my 9-year-old child while away from home. My primary concern was ensuring strict control over monthly spending and preventing any unexpected out-of-bundle charges. For this reason, I made it clear to the sales consultant that I required a package with controlled data usage. It has therefore come as a complete surprise to receive a bill approximately 75% higher than the agreed monthly amount due to alleged excess data usage on one of the lines. When I contacted MTN for clarification, I was informed that the number had exceeded its data limit. However, no satisfactory explanation was provided as to why the line was permitted to continue consuming chargeable data beyond the allocated limit. More concerning is that I was never advised during the sales process that the contract would allow unrestricted out-of-bundle data usage.